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Variation of Valency

The valency o...

Question

The valency of aluminium is :

A

1

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B

2

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C

3

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D

4

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Solution

The correct option is C
3

The atomic number of aluminium is 13. So, the electronic configuration is 2,8,3. It loses 3 electrons and form $A l^{+ 3}$ ion, therefore it has a valency of 3.

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Variation of Valency

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