What is filament? who answer this question first I will make u brainleist, thanks and I will vote you and I will follow you

filament is a conducting wire with high melting point and is very thin like a thread through which electricity is passed and is present in most of the electric bulb and appliances.

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.