The parameter of an atom that defines its unique position in the periodic table is:
A) the number of protons in the nucleus.
B) the number of protons and neutrons in the nucleus.
C) its temperature.
D) its size.

Question

Quizplus · Accepted Answer

The number of protons in the nucleus is known as the atomic number, which is the defining characteristic of an element and determines its unique position in the periodic table.

The Parameter of an Atom That Defines Its Unique Position