Answer:-
atoms.
Solution:- We have been given the grams of carbon tetrachloride and asked to calculate the number of atoms of chlorine. It is a three step conversion problem. In the first we convert the grams of carbon tetrachloride to moles of it. In second step we convert moles of carbon tetrachloride to moles of chlorine and in the third step we convert the moles of chlorine to atoms of chlorine.
For grams to mole conversion we need the molar mass of the compound. Molar mass of carbon tetrachloride is 153.82 grams per mol. If we look at the formula of carbon tetrachloride then four chlorine are present in it. It means 1 mol of carbon tetrachloride has four moles of chlorine. The calculations are as follows:

=
atoms
So, there are
atoms in 12.2 grams of
.
The answer is eight electrons.
#protactinium
- It lies in 7th period having Z=91
The outer electronic configuration is 6d^17s^2
- d-block element(transition)
So it will form polar covalent bond (2)
#Francium
Outer electronic configuration 7s^1
It will form ionic bond (3)
I think this is how to do it. but I'm sorry if it's not exactly right