Question

An element A has an outer electronic configuration $2s^{2}2p^4$. The number of covalent bonds in $A_2$ is:

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is B 2

Based on the outer electronic configuration, the element needs two electrons to attain stable electronic configuration. The element is oxygen and hence it shares two electrons and forms a covalent double bond in $A_2$.