Question

An atom of aluminium has 13 protons & 14 neutrons : the mass number of aluminum is _____________(a)13 (b) 27 (c) 14 (d) 72​

Answer 1

Answer:

72

Explanation:

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Answer 2

Answer:

The mass number of aluminium is (b) 27

Explanation:

Mass number = No.of protons + No.of neutrons

= 13 + 14

= 27