Question

An atom of an elements has 13 electrons and mass number 27.the

nucleus of this atom contains __ neutrons​

Answer 1

Explanation:

13 electrons - Atomic number 13 - Aluminium

mass number -27

Number of neutrons = Mass number (A) - Atomic number (Z) = (A-Z)

= 27-13

= 14

The nucleus of this atom contains 14 neutrons

check!.

yes it's correct

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