among H Bcl3 Bh3 and Nh4 which one is electrophile?
Answers
Explanation:
Electron deficient species are known as electrophiles.
Among the given, H
3
O
⊕
has lone pair of electrons for donation, so it is not electron deficient and hence, not an electrophile.
The answer is Bcl3 and Bh3.
In order to accept an electron pair, a positively charged or electron-deficient species must have at least one unoccupied orbital. Electrophiles are the species that are most receptive to lone pairs of electrons.
BH3 operates as an electrophile by accepting the electron pair in this vacant p orbital. BH3 is an electrophile because of this.
Since boron contains an open, electron-accepting 2pz orbital that is perpendicular to its plane, BCl3 is truly an electrophile.
Nitrogen and hydrogen are bound together in NH4 and share electrons. Due to the full filling of all orbitals, as a result, nitrogen is unable to accept any more electrons. Nh4 is therefore not an electrophile.
Therefore Bcl3 and Bh3 are electrophiles.
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