Why magnesium have two valency 3,5 plese answer?
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Both will have valency 2
FIRST TWENTY ELEMENT AND THEIR VALENCY INCLUDE;
HYDROGEN 1
HELIUM 0
LITHIUM 1
BERYLLIUM 2
BORON 3
CARBON 2,4
NITROGEN 3,5
OXYGEN 2
FLUORINE 1
NEON 0
SODIUM 1
MAGNESIUM 2
ALUMINUM 3
SILICON 4
PHOSPHORUS 3,5
SULFUR 2,4,6
CHLORINE 1,3,5,7
ARGON 0
POTASSIUM 1
CALCIUM 2
FIRST TWENTY ELEMENT AND THEIR VALENCY INCLUDE;
HYDROGEN 1
HELIUM 0
LITHIUM 1
BERYLLIUM 2
BORON 3
CARBON 2,4
NITROGEN 3,5
OXYGEN 2
FLUORINE 1
NEON 0
SODIUM 1
MAGNESIUM 2
ALUMINUM 3
SILICON 4
PHOSPHORUS 3,5
SULFUR 2,4,6
CHLORINE 1,3,5,7
ARGON 0
POTASSIUM 1
CALCIUM 2
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