Question

Number of protons in the nucleus is called ___________

(a) Atomic number

(b) Mass number

(c) Electric charge

(d) Periodic number

This question was posed to me by my college director while I was bunking the class.

My query is from Atomic Structure in chapter Nuclear Power Plant of Energy Engineering

Answer 1

Right option is (a) Atomic number

For explanation: Number of protons in the nucleus is called atomic number Z. it is unique for each chemical element, and represents both the number of positive charges on the central massive nucleus of the atom and the number of electrons in orbits around the nucleus.