Chemistry
Metal M forms a chloride with the formula MCl2. What type of bond is in MCl2? Write the formula of the compound when M combines with sulphur, oxygen and nitrogen.
Atomic Structure
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Answer
The bond formed between metal (M) and non-metal (chlorine) is ionic bond.
As M bonds with two chlorine atoms having electronic configuration [2,8,7], so we can say that M donates two electrons to two chlorine atoms to complete their octet and therefore, it has a valency of 2.
When metal (M) having +2 valency combines with sulphur [2,8,6] having -2 valency, M donates its two valence electrons to sulphur and formula of compound formed is MgS
When metal(M) having +2 valency combines with oxygen [2,6] having -2 valency, M donates its two valence electrons to oxygen and formula of compound formed is MgO
When metal (M) atoms having +2 valency combines with nitrogen [2,5] having -3 valency then an ionic bond is formed by the transfer of 6 electrons from 3 metal (M) atoms to 2 nitrogen atoms, hence the formula of the compound is Mg3N2.
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