Question

Electronic configuration of only one P block element is exceptional. One molecule of that element consists of how many atoms of it ?

• A. One
• B. Two
• C. Three
• D. Four

Answer 1

Answer: (A)

$He$ is a $p$ -block element but its electronic configuration does not follow the normal trend of $p$ -block element electronic configuration. Since, He is monoatomic, hẹnce it consists of one atom of it.