1.

Element x has 12 protons in its nucleus .To which group in the peiodic tabel would it belong?

Answer»

IVA(14)
IIA((2)
IIIA(13)
VI(16)

Solution :Theatomic NUMBER of X=12
Its ELECTRONICCONFIGURATION =2,8,2
`THEREFORE` X belongs to IIA (2) group since there are tow ELECTRONS in the valence shell


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