B. chemical bonds, the lines stand for the bond between the compounds.
Density = mass divided by volume
Density = 8.2 divided by 24.5
Density = 0.33g/cm3
- No of protons=No of electrons=15
<h3>Mass no:-No of neutrons+No of protons </h3>

Now
- It has atomic no 15 hence its Phosphorus(P)
Electronic configuration:-
.
Chloride formula:-

or.
