Question

An atom of an element contains 12 protons, 12 neutrons, and 12 electrons. This element is in Group A) 1 B) 2 C) 6 D) 18

Answer 1

B) 2

Step-by-step explanation:

This is because the element in discussion is magnesium which has 12 protons and it falls in group 2 (the second column in periodic table)