Question

An element 'X' has 3 electrons in
its third shell. State its electronic
configuration and valency - *​

Answer 1

Answer:

valency is 3 because atomic number become 13 according to question

Answer 2

Answer:

Valancy is 3..

Element is aluminium.

electronic configuration is 1s*2 2s*2 2p*6 3s*2 3s*2..

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