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

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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 atomic numbers, difference in valence electrons and other properties. Their reactivity also varies because of the number and activeness of the electrons in the atom.

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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

Description : Isotopes of an element have the same (A) Number of neutrons (B) Mass number (C) Electronic configuration (D) Atomic weight

Last Answer : (C) Electronic configuration

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 

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.

Description : The cause of periodicity of properties (a) Increasing atomic radius (b) Increasing atomic weights (c) Number of electrons in the valency orbit (d) The recurrence of similar outer electronic configuration

Last Answer : Ans:(d)

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Last Answer : d. electrons

Description : (3) the number of electrons orbiting around the nucleus Explanation: The chemical behavior of an atom is determined by the number of electrons on its outer shell. As for the chemical bonding properties of ... , and in what ratio atoms will bond to form the 20,000,000 different substances on Earth.

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Description : For the correct assignment of electronic configuration of a complex, the valence bond theory often requires the measurement of

Last Answer : For the correct assignment of electronic configuration of a complex, the valence bond theory often ... activity C. magnetic moment D. dipole moment

Description : If the valence shell electronic configuration of an element is 3s^2 3p^1, in which block of the periodic table is it placed?

Last Answer : If the valence shell electronic configuration of an element is 3s2 3p1, in which block of the periodic table is it placed?

Description : If the valence shell electronic configuration is ns^2 np^5, the element will belong to :

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

Last Answer : ANSWER: TWO

Description : From the elements: Cl, Br, F, O, Al, C, Li, Cs and Xe; choose the following: (a) The element with highest negative electron gain enthalpy. (b) The element with lowest ionization enthalpy. ( ... . (f)The element which belongs to zero group. (g) The elements which forms largest number of compounds.

Last Answer : Ans. (a). The element chlorine (Cl) has the highest negative electron gain enthalpy. (b). The element cesium (Cs) has lowest ionization enthalpy. (c). The element fluorine F has lowest atomic radius. (d ... zero group (or group 18). (g). The element carbon (C) forms the largest number of compounds.

Description : Do elements in the same family have the same number of valence electrons?

Last Answer : Yes, this is a general rule.

Description : Valence configuration of VI group elements is

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Description : What are the number of valence electrons of atoms in semiconductor?

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Last Answer : C silicon

Description : In terms of valence electrons what is the different between metallic elements and nonmetallic elements?

Last Answer : Feel Free to Answer

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.

Description : Write the electronic configuration of scandium having atomic number 21.

Last Answer : Ans-Sc = [Ar]3d1 4S2

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 : 2, 8, 8, 2

Description : Atoms of the same element that have different numbers of neutrons are called _______ a. isotopes b. ions c. isomers d. inert elements

Last Answer : a. isotopes

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

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.

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.

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.

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Last Answer : protons

Description : atoms with low ionization energy give up their outer valence electrons with ease?

Last Answer : trueapex

Description : What is the term used to describe the sharing of valence electrons between two or more atoms?

Last Answer : Covalent bonding.

Description : Atoms with four valence electrons are good conductors. (A) True (B) False

Last Answer : (B) False

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Last Answer : insulator(b)

Last Answer : An element used in semiconductors whose atoms have three valence electrons is An acceptor.

Last Answer : An acceptor is an element used in semiconductors whose atoms have three valence electrons.

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

Last Answer : (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.

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

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

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Description : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.

Last Answer : What are the valence electrons? For s-block and p-block elements show that number of valence electrons is equal to its group number.

Description : What are the atoms of the elements which have same number of neutrons called? -Do You Know?

Last Answer : answer:

Description : What are the atoms of the elements which have same number of neutrons called?

Last Answer : Isotones

Description : Atoms of elements having same number of neutrons are called?

Last Answer : Isotones eg : Helium

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Last Answer : Nitrogen

Description : Which group of elements have an outer electronic configuration of S-2-P-6?

Last Answer : ANSWER: NOBLE GASES

Description : Which of the following groups of elements have an OUTER ELECTRONIC configuration of S-2-P-2? w) halogens x) Nitrogen-Phosphorus Group y) Carbon-Silicon Group z) Boron-Aluminum Group

Last Answer : ANSWER: Y -- CARBON-SILICON GROUP

Description : Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?

Last Answer : small atomic radius.

Description : Elements, like calcium, located toward the top of a group have a high attraction for their valence electrons because they have a _?

Last Answer : small atomic radius.

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Description : Electronic configuration of Element Atomic number 20 is –

Last Answer : 2, 8, 8, 2

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

Last Answer : 2, 8, 8, 2

Description : Which one is different for the neutral atoms of the isotopes of an element? (A) Atomic weights (B) Atomic numbers (C) Number of protons (D) Number of electrons

Last Answer : (A) Atomic weights

Description : Which one is different for the neutral atoms of the isotopes of an element? (A) Atomic weights (B) Atomic numbers (C) Number of protons (D) Number of electrons

Last Answer : (A) Atomic weights