1boron is small so.........the 2s electrons are strongly repelled by nucleus............so it has a valency of 3.........
also its configuration is
2 2 1
1s 2s 2p
after losing 3 electrons it aquires stable configuration of He atom.............
As we known , the number of unpaired valence electrons is the valency therebye, Boron (2s2 2p1) should have monovalency , but it is invariably trivalent , never monovalent why ?
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3 Answers
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13Boron can expand covalency having two empty p-orbitals, thereby providing 3-unpaired eletrons fr sharing....which wud result in it having 2-electrons short frm a complete octet.
Waise bhi, monovalency won't help, 'coz a compound (even if formed) wud be highly unstable..
Bhaiya, i dunno if u wanted some other way out,this is wht i thought of at the 1st sight..
@Madhu... It aint easy to obtain a B3+ (B+ wud be easier in tht regard!)...difficult 2 fish out electrons frm the 2s...
