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NiS .simple just take H2S so s has valency 2.we know nickel has valency 2(i hope you did) so formula is NiS
The valency of sulfur in hydrogen sulfide is 2. This means that sulfur in hydrogen sulfide forms two bonds with other elements or ions, such as hydrogen in this case.
-1 hco3-1 all bases are - and most if not all the ones with hydrogen in front are -1 for example- hydrogen sulfate (hso4-1)or hydroxide (oh-1)
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There are two atoms.Formula for hydrogen sulphide is H2S.
Three
when carbon is not in exited state it has two valency to form the bond. But when it is exited it has four unpaired of electrons. So therefore carbon has a four valency and can form four bonds.
The valency of lithium is 1. It has one valence electron in its outer shell.
Its valency is 0.
the valency is 4
nitrogen and sulphide
The formula for Lead Sulfide (or Lead Sulphide) is either: PbS for Lead(II) Sulphide, or PbS2 for Lead(IV) Sulphide.