An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of an atom is...? Mcqs

An atom of an element has 11 protons, 11 electrons and 12 neutrons. The atomic mass of an atom is...?

(A) 11

(B) 12

(C) 22

(D) 23

Source: This question is taken from the Everyday Science