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प्रश्न
Give a reason – Magnesium [2, 8, 2] has valency 2+.
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उत्तर
Valency of magnesium is 2+, Mg [2, 8, 2]
Electronic configuration of Mg is 2, 8, 2 i.e. there are 2 valence electrons which Mg can lose and achieve the stable configuration of nearest noble gas Neon.
Hence is cation Mg2+ has valency 2+.
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