Question

The atom of an element has electronic configuration 2,8,7 to which of the following elements would it be chemically similar​

Answer 1

Answer:

Halogens or group seventeenth elements.

Explanation:

Halogens have the outer electronic configuration as

$n {s}^{2} n {p}^{5}$

For example, fluorine has the e.c as

$1 {s}^{2} 2 {s}^{2} 2 {p}^{5}$

Answer 2

Answer:

It is Chlorine(Cl) . It is chemically similar to Chlorine,Group 17 element .

Explanation:

It is chemically similar to Fluorine (F), Bromine (Br), Iodine (I), & Attrium (At).