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17 October, 12:35

Which of the following must be the same in atoms of the same element? (Ex: all atoms of silver)

A. number of protons

B. atomic number

C. atomic mass

D. number of neutrons

E. number of electrons

F. charge

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Answers (1)
  1. 17 October, 13:20
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    option b = atomic number

    Explanation:

    The atomic number of silver is 47. Its isotopes range from Ag⁹³ - Ag¹³². The naturally occurring silver is made up of two stable isotopes i. e ₄₇Ag¹⁰⁷ and ₄₇Ag¹⁰⁹. The percentage of Ag¹⁰⁷ is 51.84% so it is more abundant than ₄₇Ag¹⁰⁹. Their atomic masses are different but the atomic number is same i. e 47.

    A neutral atom have equal number of protons and neutrons. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example in case of silver 47 protons and 47 electrons are present. The number of protons or number of electrons are the atomic number of an atom while the number of protons and number of neutrons are the mass number of an atom. Every atom consist of nucleus or a positive center. The protons and neutrons are present with in the nucleus while electrons are present out side the nucleus. All these three subatomic particles construct an atom.
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