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Question:
An element has electronic configuration 1s2 2S2 2P26 3S2 IN ITS 2 OXIDATION STATE the formula of its sulphide
Answer:

This electronic configuration, 1s2,2s2,2p6,3s2 stands for magnesium, which in its +2 oxidation state will lose the two 3s electrons to sulphide. So the formula of the sulphide is MgS.

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