Question

The outer electronic structure of $3s^23p^5$ is possessed by

• A. O
• B. Cl
• C. Br
• D. Ar

Answer 1

Answer: (B)

Cl

Answer 2

Outer electronic configuration is $3s^23p^5$
Therefore, complete electronic configuration is
$1s^22s^22p^63s^23p^5$
With Z = 17. Therefore, the element is Cl.