Question

An element X has the electronic configuration 2, 8, 7

a) Identify the group and period to which element X belongs.

b) What is the atomic number of element X?

c) Draw the Bohr model of element X.​

Answer 1

Answer:

a) it belongs to group 17th and period 3rd

b) 17

Answer 2

$\huge \mathfrak \green{Answer}$

$\begin{array}{ | c | c | c | }1. & x & Chlorine \\2. & group & 17 \\3. & period & 3 \\4. & atomic \: no. & 17 \end{array}$

Bhor's model of chlorine is in the attachment