I one plz

I one plz Boron forms(BF4)' but A1 forms do e;em.ents in the same group have similar e;ectron gain entha:pw,

Dear Student,

Boron has Electronic configuration as: [He]2s22p1 and Aluminum as : [Ne]3s23p1

However Al has vacant 'd' orbitals and can expand its octet in [AlF6]whereas, boron cannot expand its octet and hence gets restricted upto [BF4]-


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