Question

2. An atom has 11protons, 11 electrons and 12 neutrons. The no. of nucleons in one atom is B) 23 A) 12 C) 24 D) 20​

Answer 1

b is answer 23

Explanation:

as nucleon is combined name of protons and neutrons

so we will add neutrons and electrons

Answer 2

B) 23

Explanation:

sum of protons and neutrons is the no. of nucleons in an atom. So,

11 + 12 = 23

Hence, option B) is correct.