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What is the valency of magnesium with at...

What is the valency of magnesium with atomic number 12 and sulphur with atomic number 16?

Text Solution

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Electronic configuration of Mg with atomic number 12 is
K L M
2 8 2
`:.` Valency of Mg =2
Electronic configuration of S with atomic number 16 is
K L M 2 8 6
`:.` Valency of S=8-6=2
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