Question

Atomic number and mass number of an element are 17 and 35 respectively find number of protons electrons and neutrons

Answer 1

No of protons ===>>17

No. Of neutrons ===>>35-17=18

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Answer 2

The number of protons, electrons and neutrons in given element are 17, 17 and 18 respectively

Explanation:

Atomic number is defined as the number of electrons or number of protons present in a neutral atom. It is represented by Z

Z = Atomic number = Number of protons = Number of electrons

Mass number is defined as the sum of number of protons and number of neutrons present in an atom. It is represented as A.

A = Mass number = Number of neutrons + Number of protons.

We are given:

Atomic number = 17 = Number of protons = Number of electrons

Mass number = 35

Number of neutrons = Mass number - Atomic number = 35 - 17 = 18

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