Question

Element 'X' has twelve protons in its nucleus. To which group of the periodic table it will belong?

• A. 1
• B. 2
• C. 6
• D. 8

Answer 1

The correct option is B 2

The atomic number of X= 12 and electronic configuration = 2,8,2.

$\therefore$ The element X belongs to IIA group, i.e., 2nd group since there are only 2 electrons in their valence shell.

Hence, option $B$ is correct.