State why the valency of :
Sodium Magnesium and Aluminium is +1 ,+2 & +3
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Answer:
Valency is the number of electrons lost or gained from the outer shell of the atom. Sodium loses 1 electron, Magnesium loses 2 and aluminium loses 3, hence their valency is +1, +2 & +3 respectively.
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2
Answer:
...
Explanation:
a) sodium loses one electron, magnesium loses two electron, and Aluminium loses 3 electron that is why their valency is is 1, 2 ,and 3 respectively.
b) chlorine accepts one electron, oxygen accepts two electron and nitrogen accepts three electron, that is its valency is -1 ,-2,-3 respectively.
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