Rutherford’s scattering experiment proved the presence of - (1) atoms in all matter (2) electrons in atoms (3) neutrons in atoms (4) nucleusin atoms

Rutherford’s scattering experiment proved the presence of - (1) atoms in all matter (2) electrons in atoms (3) neutrons in atoms (4) nucleusin atoms
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(4) nucleusin atoms Explanation: Ernest Rutherford and his fellows Geiger and Marsden proved between 1911 and 1913 the existence of the atomic nucleus. This scattering experirnent led to the development of the Rutherford model (planetary model) of the atom, and eventually to the Bohr model.
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Rutherford’s scattering experiment proved the presence of (1) atoms in all matter (2) electrons in atoms (3) neutrons in atoms (4) nucleus in atoms

Description : Rutherford’s scattering experiment proved the presence of (1) atoms in all matter (2) electrons in atoms (3) neutrons in atoms (4) nucleus in atoms

Last Answer : nucleus in atoms

Rutherford's scattering experiment proved the presence of – (1) atoms in all matter (2) electrons in atoms (3) neutrons in atoms (4) nucleus in atoms

Description : Rutherford's scattering experiment proved the presence of – (1) atoms in all matter (2) electrons in atoms (3) neutrons in atoms (4) nucleus in atoms

Last Answer : (4) nucleus in atoms Explanation: On the basis of his experiment, Rutherford put forward the model of an atom, which had the following features: There is a positively charged centre in an atom called the nucleus.

Fill in the blanks in the following statements (a) Rutherford’s α-particle scattering experiment led to the discovery of the ——— -Science

Description : Fill in the blanks in the following statements (a) Rutherford’s α-particle scattering experiment led to the discovery of the ——— -Science

Last Answer : Rutherford’s α-particle scattering experiment led to the discovery of the nucleus

Rutherford’s scattering experiment related to the size of which thing?

Description : Rutherford’s scattering experiment related to the size of which thing?

Last Answer : Nucleus

In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford’s model of an atom, ~ 1.00% of the α-particles were found to deflect at angles > 50º. If one mole of α- -Science

Description : In the Gold foil experiment of Geiger and Marsden, that paved the way for Rutherford’s model of an atom, ~ 1.00% of the α-particles were found to deflect at angles > 50º. If one mole of α- -Science

Last Answer : Total number of α particles used for bombardment = 1 mole 1 mole=6.022×1023 particles number of α particles deflected at angles greater than 50°(>50°)= 1% Number of α particles ... at angles less than 50°= 99/100 × 6.022 × 1023 =5.96 × 1023

In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the following conclusions. It was concluded that: w) the charge of an electron is negative x) the nucleus of a gold atom carries all its charge y) most of the mass of a gold atom is in its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom

Description : In Rutherford's experiment involving the deflection of alpha particles by atomic nuclei, the fact that some of the alpha particles bombarding the thin gold foil were back-scattered, led to one of the ... its nucleus z) the nucleus of a gold atom occupies nearly the entire space of the atom

Last Answer : ANSWER: Y -- MOST OF THE MASS OF A GOLD ATOM IS IN ITS NUCLEUS

Atoms of different elements have - (1) same atomic number and same electronic configuration (2) different atomic number and same eletronic configuration (3) different atomic number and different number of valence electrons (4) same number of electrons and neutrons

Description : Atoms of different elements have - (1) same atomic number and same electronic configuration (2) different atomic number and same eletronic configuration (3) different atomic number and different number of valence electrons (4) same number of electrons and neutrons

Last Answer : (3) different atomic number and different number of valence electrons Explanation: Each element's atoms have a different number of protons, neutrons, and electrons, which is why they have different ... Their reactivity also varies because of the number and activeness of the electrons in the atom.

The isotope atoms differ in - (1) number of neutrons (2) atomic number (3) number of electrons (4) atomic weight

Description : The isotope atoms differ in - (1) number of neutrons (2) atomic number (3) number of electrons (4) atomic weight

Last Answer : (1) number of neutrons Explanation: Important to note that isotope atoms have same atomic number.

The nuclei of heavy atoms generally contain: w) more electrons than neutrons x) more protons than electrons y) more neutrons than electrons z) more orbitals than electrons

Description : The nuclei of heavy atoms generally contain: w) more electrons than neutrons x) more protons than electrons y) more neutrons than electrons z) more orbitals than electrons

Last Answer : ANSWER: Y -- MORE NEUTRONS THAN ELECTRONS

Atoms of different elements have (1) same atomic number and same electronic configuration (2) different atomic number and same eletronic configu-ration (3) different atomic number and different number of valence electrons (4) same number of electrons and neutrons

Description : Atoms of different elements have (1) same atomic number and same electronic configuration (2) different atomic number and same eletronic configu-ration (3) different atomic number and different number of valence electrons (4) same number of electrons and neutrons

Last Answer : different atomic number and different number of valence electrons

Which of these statements is false All atoms are alike. All electrons are alike. All neutrons are alike. All protons are alike.?

Description : Which of these statements is false All atoms are alike. All electrons are alike. All neutrons are alike. All protons are alike.?

Last Answer : True statements: All neutrons are alike, all electrons are alike, all protons are alike (All atoms of a given isotope is only alike). False statement: All atoms are alike All atoms are not alike as they may vary in the number of protons / electrons / neutrons.

Atoms of U-238 and U-235 differ in structure by three (A) Electrons and three protons (B) Protons (C) Neutrons (D) Electrons

Description : Atoms of U-238 and U-235 differ in structure by three (A) Electrons and three protons (B) Protons (C) Neutrons (D) Electrons

Last Answer : (C) Neutrons

Atoms with varying mass numbers are called ________. a. Electrons b. Ions c. Isotopes d. Neutrons

Description : Atoms with varying mass numbers are called ________. a. Electrons b. Ions c. Isotopes d. Neutrons

Last Answer : c. Isotopes

The periodic table arranges elements by the number of ____ in their outermost energy levels. a. neutrons c. protons b. atoms d. electrons

Description : The periodic table arranges elements by the number of ____ in their outermost energy levels. a. neutrons c. protons b. atoms d. electrons

Last Answer : d. electrons

The lustre of the metals is because of (1) high density, due to closed packing of atoms (2) high polish (3) reflection of light due to the presence of free electrons (4) absorption of light due to the presence of cavities

Description : The lustre of the metals is because of (1) high density, due to closed packing of atoms (2) high polish (3) reflection of light due to the presence of free electrons (4) absorption of light due to the presence of cavities

Last Answer : reflection of light due to the presence of free electrons

The difference between isotopes of an element is due to the presence of a different number of (a) Protons (b) Neutrons (c) Electrons (d) Photons

Description : The difference between isotopes of an element is due to the presence of a different number of (a) Protons (b) Neutrons (c) Electrons (d) Photons

Last Answer : Ans:(b)

Ordinary water is not used as a moderator because, it (A) Has a low absorption cross-section (B) Has a low scattering cross-section (C) Absorbs neutrons (D) Does not absorb neutrons

Description : Ordinary water is not used as a moderator because, it (A) Has a low absorption cross-section (B) Has a low scattering cross-section (C) Absorbs neutrons (D) Does not absorb neutrons

Last Answer : (C) Absorbs neutrons

Enlist the conclusions drawn by Rutherford from his α-ray scattering experiment. -Science

Description : Enlist the conclusions drawn by Rutherford from his α-ray scattering experiment. -Science

Last Answer : Rutherford drawn following conclusion from his α-ray scattering experiment. α-particles passed through the gold foil without any deflection concluding the empty space inside the atom. Deflection is observed in ... and mass of the gold atom were concentrated in a very small volume within the atom.

What did the alpha scattering experiment reveal?

Description : What did the alpha scattering experiment reveal?

Last Answer : Need answer

Swan neck flask experiment proved :

Description : Swan neck flask experiment proved :

Last Answer : Swan neck flask experiment proved : A. biogenesis B. abiogenesis C. special creation D. both (1) and (2)

Oxygen during photosynthesis comes from water was proved by `O^(18)` experiment

Description : Oxygen during photosynthesis comes from water was proved by `O^(18)` experiment

Last Answer : Oxygen during photosynthesis comes from water was proved by `O^(18)` experiment A. Ruben and Kamen B. Hill C. Warburg D. Blackman

Who proved the Abiogenesis wrong and when? OR Write a note on Redi Experiment?

Description : Who proved the Abiogenesis wrong and when? OR Write a note on Redi Experiment?  

Last Answer : In 1668, an Italian scientist F. Redi performed experiments to disprove the abiogenesis. Redi's Experiment: i) He took two sets of four bottles each. ii) In first set, he put dead snakes ... are responsible. viii) He stated that maggots were the larvae, produced from the eggs of visited flies. 

Explain briefly the defects in Rutherford’s Atomic Model.

Description : Explain briefly the defects in Rutherford’s Atomic Model.

Last Answer : Ans : Defects In Rutherford's Atomic Model : 1. It fails to explain that since electron is revolving around the nucleus constantly it should lose energy & ultimately falls into nucleus. 2 ... emit energy continuously then there would be a continuous spectrum but instead we get line spectrum.

Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .

Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions .

Last Answer : (1) Isotopes Explanation: Atoms that have the same number of protons but different numbers of neutrons are called isotopes. For example, carbon-12, carbon13 and carbon-14 are three isotopes of the element ... has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively.

Which one of the following best defines the word “allotropes”? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between those of metals and nonmetals D Atoms of a given atomic number that have a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Description : Which one of the following best defines the word allotropes ? A Different structural forms of an element B A pair of substances that differ by H+ C Elements that possess properties intermediate between ... a specific number of neutrons E The different phases (solid, liquid or gas) of a substance

Last Answer : A Different structural forms of an element 

Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions

Description : Atoms having the same number of protons but different number of neutrons are called : (1) Isotopes (2) Cations (3) Higgs-boson (4) Anions

Last Answer : Isotopes

Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.

Description : Who first explained the billiard-ball-like collisions photons make with the free electrons in a scattering material? He received the Nobel Prize in Physics in 1927 for this work.

Last Answer : ANSWER: ARTHUR HOLLY COMPTON

The scientist who proved that the ele- ments are made up of atoms?

Description : The scientist who proved that the ele- ments are made up of atoms?

Last Answer : John Dalton

The blueness of the sky is mainly due to -------? A. The scattering of sunlight by air molecules (Answer) B. The presence of water vapor C. Absorption of blue light by the air D. Emission of blue light by the atmosphere

Description : The blueness of the sky is mainly due to -------? A. The scattering of sunlight by air molecules (Answer) B. The presence of water vapor C. Absorption of blue light by the air D. Emission of blue light by the atmosphere

Last Answer : A. The scattering of sunlight by air molecules (Answer)

The bluish colour of water in deep sea is due to (a) The presence of algae and other plants found in water (b) Reflection of sky in water (c) Scattering of light (d) Absorbtion of light by sea

Description : The bluish colour of water in deep sea is due to (a) The presence of algae and other plants found in water (b) Reflection of sky in water (c) Scattering of light (d) Absorbtion of light by sea

Last Answer : (c) Scattering of light

An atom of an element with mass number 23 and atomic number 11 will have- (1) 11 neutrons, 12 protons and 11 electrons (2) 11 protons, 12 neutrons and 11 electrons (3) 11 protons, 12 electrons and 11 neutrons (4) 23 protons and 11 electrons

Description : An atom of an element with mass number 23 and atomic number 11 will have- (1) 11 neutrons, 12 protons and 11 electrons (2) 11 protons, 12 neutrons and 11 electrons (3) 11 protons, 12 electrons and 11 neutrons (4) 23 protons and 11 electrons

Last Answer : (2) 11 protons, 12 neutrons and 11 electrons

Chlorine atom and chloride ions - (1) Have an equal number of protons (2) Have an equal number of electrons (3) Unequal number neutrons (4) reacts spontaneously with water

Description : Chlorine atom and chloride ions - (1) Have an equal number of protons (2) Have an equal number of electrons (3) Unequal number neutrons (4) reacts spontaneously with water

Last Answer : (1) Have an equal number of protons

Atomic number of an atom gives the number of which of the following? (1) electrons (2) protons (3) neutrons (4) neutrons and protons

Description : Atomic number of an atom gives the number of which of the following? (1) electrons (2) protons (3) neutrons (4) neutrons and protons

Last Answer : (2) protons Explanation: Atomic number of a chemical element is the number of protons found in the nucleus of an atom of that element, and therefore identical to the charge number of the nucleus. ... periodic table. In an uncharged atom, the atomic number is also equal to the number of electrons.

Which of the following does the Nucleus of an atom consist of? (1) Protons and neutrons (2) Protons and electrons (3) Electrons (4) Protons

Description : Which of the following does the Nucleus of an atom consist of? (1) Protons and neutrons (2) Protons and electrons (3) Electrons (4) Protons

Last Answer : (1) Protons and neutrons Explanation: The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom. Protons and neutrons are bound together to form a ... nucleus was discovered in 1911 by Ernest Rutherford based on the 1909 Geiger-Marsden gold foil experiment.

Atomic number is equal to - (1) Number of electrons (2) Number of neutron (3) Number of protons (4) Total number of protons and neutrons

Description : Atomic number is equal to - (1) Number of electrons (2) Number of neutron (3) Number of protons (4) Total number of protons and neutrons

Last Answer : (3) Number of protons Explanation: Atomic number is equal to Number of protons. The atomic number or proton number of a chemical element is the number of protons found in the nucleus of an atom.

Atomic number of an atom gives the number of which of the following? (1) electrons (2) protons (3) neutrons (4) neutrons and protons

Description : Atomic number of an atom gives the number of which of the following? (1) electrons (2) protons (3) neutrons (4) neutrons and protons

Last Answer : (2) protons Explanation: The atomic number or proton number (symbol Z) of a chemical element is the number of protons found in the nucleus of an atom.

What nucleus of atom contains? (1) protons (2) electrons (3) electrons and protons (4) protons and neutrons

Description : What nucleus of atom contains? (1) protons (2) electrons (3) electrons and protons (4) protons and neutrons

Last Answer : (4) protons and neutrons Explanation: The nucleus, that dense central core of the atom, contains both protons and neutrons. Electrons are outside the nucleus in energy levels.

Isotopes differ in - (1) No. of electrons (2) No. of protons (3) No. of neutrons (4) Chemical reactivity

Description : Isotopes differ in - (1) No. of electrons (2) No. of protons (3) No. of neutrons (4) Chemical reactivity

Last Answer : (3) No. of neutrons Explanation: Isotopes have the same atomic number because they are the same element but have a different atomic mass because they contain a different number of neutrons.

What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons

Description : What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons

Last Answer : (1) Electrons Explanation: Circling around outside the nucleus are tiny little particles called electrons. Electrons have a negative charge. Electrons spin as they circle the nucleus billions of times every ... or lose energy, they jump between energy levels as they are rotating around the nucleus.

The nuclear particles which are assumed to hold the nucleons together are - (1) positrons (2) neutrons (3) electrons (4) mesons

Description : The nuclear particles which are assumed to hold the nucleons together are - (1) positrons (2) neutrons (3) electrons (4) mesons

Last Answer : (4) mesons Explanation: The nuclear particles which are assumed to hold the nucleons together are mesons.

The nucleus of an atom consists of - (1) electrons and neutrons (2) electrons and protons (3) protons and neutrons (4) All of the above

Description : The nucleus of an atom consists of - (1) electrons and neutrons (2) electrons and protons (3) protons and neutrons (4) All of the above

Last Answer : (3) protons and neutrons Explanation: The atomic nucleus consists of nucleons—protons and neutrons. Protons and neutrons are made of quarks and held together by the strong force generated by gluon exchange between quarks.

The nucleus of an atom consists of - (1) electrons and neutrons (2) electrons and protons (3) protons and neutrons (4) All of the above

Description : The nucleus of an atom consists of - (1) electrons and neutrons (2) electrons and protons (3) protons and neutrons (4) All of the above

Last Answer : (3) protons and neutrons Explanation: The atomic nucleus consists of nucleons—protons and neutrons. Protons and neutrons are made of quarks and held together by the strong force generated by gluon exchange between quarks.

The silver luster of the metals can be attributed to one of the following. It is attributed to their free w) protons x) ions y) neutrons z) electrons

Description : The silver luster of the metals can be attributed to one of the following. It is attributed to their free w) protons x) ions y) neutrons z) electrons

Last Answer : ANSWER: Z -- ELECTRONS 

It is believed that carbon-14 in nature is slowly generated by the action of: w) protons on carbon-12 x) electrons on hydrogen y) cosmic rays on boron z) neutrons on nitrogen

Description : It is believed that carbon-14 in nature is slowly generated by the action of: w) protons on carbon-12 x) electrons on hydrogen y) cosmic rays on boron z) neutrons on nitrogen

Last Answer : ANSWER: Z -- NEUTRONS ON NITROGEN 

Atomic number of an atom gives the number of which of the following ? (1) electrons (2) protons (3) neutrons (4) neutrons and protons

Description : Atomic number of an atom gives the number of which of the following ? (1) electrons (2) protons (3) neutrons (4) neutrons and protons

Last Answer : protons

Which of the following does the Nucleus of an atom consist of? (1) Protons and neutrons (2) Protons and electrons (3) Electrons (4) Protons

Description : Which of the following does the Nucleus of an atom consist of? (1) Protons and neutrons (2) Protons and electrons (3) Electrons (4) Protons

Last Answer : Protons and neutrons

The chemical bahaviour of an atom depends upon (1) the number of protons in its nucleus (2) the number of neutrons in the nucleus (3) the number of electrons orbiting around the nucleus (4) the number of nucleons in the nucleus

Description : The chemical bahaviour of an atom depends upon (1) the number of protons in its nucleus (2) the number of neutrons in the nucleus (3) the number of electrons orbiting around the nucleus (4) the number of nucleons in the nucleus

Last Answer : the number of electrons orbiting around the nucleus

What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons

Description : What particles move around the nucleus of an atom and are negatively charged? (1) Electrons (2) Protons (3) Positrons (4) Neutrons 

Last Answer : Electrons

The dual nature of electrons was experi- mentally proved by?

Description : The dual nature of electrons was experi- mentally proved by?

Last Answer : I.H. Germer

The optical property of a water body depends on: (A) Absorption by the dissolved material (B) Absorption by the suspended particulate matter (C) Scattering by the suspended particulate matter (D) All of these

Description : The optical property of a water body depends on: (A) Absorption by the dissolved material (B) Absorption by the suspended particulate matter (C) Scattering by the suspended particulate matter (D) All of these

Last Answer : Answer: Option D