Question

In a neutral atom there are 13 electrons, and number of neutrons are 14 then find it's mass number is
a) 13
b) 14
c) 12
d) 27
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Answer 1

Answer:

d) 27

Explanation:

neutral atom means number of protons is equal to number of electrons.

Mass number is equal to sum of number of protons and number of neutrons.

Answer 2

Answer:

The correct option is (d) 27.

Explanation:

A neutral atom has the same number of electrons and protons in it.

The neutral atom has 13 electrons, so it must have 13 protons.

The mass number of an atom is the sum of protons and neutrons present in its nucleus.

The atom has 14 neutrons and 13 protons, so the mass number will be:

13 + 14 = 27 amu

Conclusion:

Proton number is 13 protons.

The mass number is 27 amu.