Which element, if combined with chlorine, will have the greatest attraction for the chlorine electrons? n p as

Basically, the answer for this would be N or NITROGEN. If we combine nitrogen with chlorine, what happens is that, it can attract more chlorine electrons towards itself. The reason is that, nitrogen is considered more electronegative compared to chlorine. So best answer for this is the first option. 

Temperature and pressure

Acovalent bond is formed between the two hydrogen bonds