Question

An element has its electron
configuration as 2,8,2. Now answer
the following questions.
a. What is the atomic number of this
element?
b. What is the group of this element?
c. To which period does this element belong?
d. With which of the following
elements would this element
resemble? (Atomic numbers are
given in the brackets)
N (7), Be (4), Ar (18), CI (17)​

Answer 1

a) 12

b) Group 2 because the outer shell electrons are 2.

c) Period 3 because it has 3 shells.

d) Beryllium as they are in the same group.

The element is magnesium.

Hope it helps

Answer 2

Answer: 12

Metal

3

Chlorine(MgCl2)

Explanation: