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Introduction

An atom has 2...

Question

An atom has 26 electrons and its atomic weight is 56. The number of neutrons in the nucleus of the atom will be

A

26

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B

30

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C

36

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D

56

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Solution

The correct option is B
30

$_{26} X^{56} A = P + N = Z + N = E + N$

No. of neutrons =56 - 26= 30

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