Simplest atom (based on atomic mass) is that of?

Simplest atom (based on atomic mass) is
that of?
by

1 Answer

Answer :

Hydrogen
by

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Why is the atomic mass of an element is usually not given as a whole number even though each individual atom of the element has a whole number of protons and neutrons.?

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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

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An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is– (1) 17 (2) 19 (3) 36 (4) 53

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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

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Description : An atom of an element has atomic number 17 and mass number 36. The number of neutrons in its nucleus is (1) 17 (2) 19 (3) 36 (4) 53

Last Answer : 19

Simplest Radioactive atom is?

Description : Simplest Radioactive atom is?

Last Answer : Tritium

The simplest atom is?

Description : The simplest atom is?

Last Answer : Hydrogen (H)

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Description : The modern atomic mass scale is based on :-

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Show diagrammatically the electron distributions in a sodium atom and a sodium ion and also give their atomic number. -Science

Description : Show diagrammatically the electron distributions in a sodium atom and a sodium ion and also give their atomic number. -Science

Last Answer : Atomic number of sodium (Z) =11 Mass number of sodium (A) = 23 Number of protons in the nucleus = 11 Number of neutrons in the nucleus =23-11 = 12 Number of electrons = 11 Electronic ... the electronic configuration is 2, 8(K, L). However, the number of protons and neutrons remains the same.

Atomic number of an element gives (a) The number of protons in its atom (b) The number of nucleons in its atom (c) The weight of the atom of the element (d) The total number of elementary particles in its atom

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Last Answer : Ans:(a)

The atomic spectra of hydrogen are explained by (a) Rutherford's model of the atom (b) Hund's rule of maximum multiplicity (c) Pauli's exclusion principle (d) Bohr's theory

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Why does atomic size of an atom increase down the group?

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Last Answer : In moving down a group, new shell is added to the atom. There is an increase in the energy level. The distance of the outermost electron from the nucleus increases. This increases the size of the atom down the group.

Give reason: Atomic size of sodium atom is greater than that of chlorine atom.

Description : Give reason: Atomic size of sodium atom is greater than that of chlorine atom.

Last Answer : Sodium is in the 1 st group where as chlorine is in 17 th group. We know that the atomic size decreases down the group. Hence sodium atom has larger atomic size than that of chlorine atom.

The number of electrons of a neutral atom is automatically known if one knows the? A. Atomic number (Answer) B. Atomic weight C. Number of orbitals D. none

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Last Answer : A. Atomic number (Answer)

Can measurements of atomic structure made frequently enough eternally prevent decay of a radioactive atom?

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Last Answer : answer:I am having a hard time imagining setting up the experiment so that the measurement happens often enough to produce the eternal isotope. It seems to me that the device doing the measurement ... from each other is fantastic. Observing one has an instantaneous affect on the other. Simply weird.

An atom has atomic number 12, what is its valency and name the element? -Chemistry 9th

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Last Answer : Element with atomic number 12 is Magnesium (Mg). Electronic configuration of magnesium is 1s2 2s2 2p6 3s2. It has 2 e- in its outermost orbit and can donate these to form a stable octet. Hence, its valency is +2.

Draw the atomic structure of (i) an atom with same number of sub-atomic particles, (ii) an atom with same number of electrons in L and M shell. -Chemistry 9th

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What are 3 atomic particles that make up an atom?

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Last Answer : i think the carbon oxgen and water :P

A radioactive atom `X` emits a `beta-`particle to produce an atom `Y` which then emits an Particle to give an atom `Z` (1) the atomic number of `X` is

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A hydrogen like atom (atomic number `z`) is in a higher excited state of quantum number `n`. This excited atom can make a transition to the first exci

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A double ionised lithium atom is hydrogen like with atomic number `3` (i)Find the wavelength of the radiation to excite the electron in `Li^(++)`from

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A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited atom can make a transition to the first excited s

Description : A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited atom can make a transition to the first excited s

Last Answer : A hydrogen like atom (atomic number Z) is in a higher excited state of quantum number n. The excited ... . (lonization energy of H-atom = 13.6 eV)

A double ionised lithium atom is hydrogen like with atomic number `3` (i)Find the wavelength of the radiation to excite the electron in `Li^(++)`from

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Last Answer : A double ionised lithium atom is hydrogen like with atomic number `3` (i)Find the wavelength ... the emission spectrum of the above excited system ?

A hydrogen like atom with atomic number Z is in an excited state of quantum number 2n. It can emit a maximum energy photon of 204 eV. If it makes a tr

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A double ionised lithium atom is hydrogen like with atomic number `3` (i)Find the wavelength of the radiation to excite the electron in `Li^(++)`from

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Last Answer : A double ionised lithium atom is hydrogen like with atomic number `3` (i)Find the wavelength ... the emission spectrum of the above excited system ?

What is a brief passage describing a neutral atom of nitrogen-14 (N-14). how the terms atomic?

Description : What is a brief passage describing a neutral atom of nitrogen-14 (N-14). how the terms atomic?

Last Answer : Nitrogen-14 atom has 7 neutrons and protons.

What is the sub-atomic particles in the nucleolus of a boron atom?

Description : What is the sub-atomic particles in the nucleolus of a boron atom?

Last Answer : Need answer

What is a brief passage describing a neutral atom of nitrogen-14 (N-14). how the terms atomic?

Description : What is a brief passage describing a neutral atom of nitrogen-14 (N-14). how the terms atomic?

Last Answer : Nitrogen-14 atom has 7 neutrons and protons.

What does the atomic number tell you about what is inside the nucleus of an atom?

Description : What does the atomic number tell you about what is inside the nucleus of an atom?

Last Answer : The atomic number is equal to the number of protons.

The electronic configuration of an atom having atomic number `20' is – (1) 2, 8, 10 (2) 2, 6, 8, 4 (3) 2, 8, 8, 2 (4) 2, 10, 8

Description : The electronic configuration of an atom having atomic number `20' is – (1) 2, 8, 10 (2) 2, 6, 8, 4 (3) 2, 8, 8, 2 (4) 2, 10, 8

Last Answer : (3) 2, 8, 8, 2 Explanation: Electrons occupy shells around the outside of an atom. There can be up to two electrons in the first shell, up to eight in the second and up to eight in the third. A calcium atom (Ca) has electron structure 2,8,8,2.

Atomic size refers to the ______ of an atom. (1) Radius (2) Circumference (3) Diameter (4) Centre

Description : Atomic size refers to the ______ of an atom. (1) Radius (2) Circumference (3) Diameter (4) Centre

Last Answer : (1) Radius Explanation: The term atomic size refers to the radius of an atom. The atomic size may be visualized as the distance between the centre of the nucleus and the outermost shell of an isolated 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: 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.

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.

The atomic number of an element is equal to the number of __________ present in its atom. (A) Neutrons (B) Electrons (C) Protons (D) Either (B) or (C)

Description : The atomic number of an element is equal to the number of __________ present in its atom. (A) Neutrons (B) Electrons (C) Protons (D) Either (B) or (C)

Last Answer : (D) Either (B) or (C)

The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element? (A) A + Z (B) A - Z (C) A (D) Z

Description : The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element? (A) A + Z (B) A - Z (C) A (D) Z

Last Answer : (B) A - Z

Tell what would happen to the stability of an atom, with atomic number higher than18, if the aufbau principle was not introduced.

Description : Tell what would happen to the stability of an atom, with atomic number higher than18, if the aufbau principle was not introduced.

Last Answer : Ans. We cannot find out the exact reason of stability of an atom & why they should have filled inner orbits before outermost shell.

The electronic configuration of an atom having atomic number '20' is?

Description : The electronic configuration of an atom having atomic number '20' is?

Last Answer : 2, 8, 8, 2

Atomic weight of an atom is (A) sum of the number of protons and neutrons. (B) sum of the number of protons and electrons. (C) sum of the number of electrons and neutrons. (D) sum of the number of electrons, protons and neutrons.

Description : Atomic weight of an atom is (A) sum of the number of protons and neutrons. (B) sum of the number of protons and electrons. (C) sum of the number of electrons and neutrons. (D) sum of the number of electrons, protons and neutrons.

Last Answer : (A) sum of the number of protons and neutrons.

When an atom undergoes beta decay, the atomic number of the nucleus: w) is unchanged x) increases by one y) decreases by one z) none of the above

Description : When an atom undergoes beta decay, the atomic number of the nucleus: w) is unchanged x) increases by one y) decreases by one z) none of the above

Last Answer : ANSWER: X -- INCREASES BY ONE

Which of the following scientists first determined the atomic number of an atom by use of X-rays? Is it: w) Millikan x) Planck y) Thompson z) Moseley

Description : Which of the following scientists first determined the atomic number of an atom by use of X-rays? Is it: w) Millikan x) Planck y) Thompson z) Moseley

Last Answer : ANSWER: Z -- MOSELEY

How many valence electrons does an atom of an element with an atomic number of twelve have?

Description : How many valence electrons does an atom of an element with an atomic number of twelve have?

Last Answer : ANSWER: TWO