Why the order of repulsion is lp-lp>lp-bp>bp-bp ?
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Valence Shell Electron Pair Repulsion (VSEPR) Theory:
(i) Lone pairs of electrons (lp) repel each other more strongly than that of bond pair (bp) of electrons. The decreasing order of repulsion is lp - lp > lp - bp > bp - bp.
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lp-lp>lp-bp>bp-bp
This is because the bond pair electrons are under the force of attraction of 2 atoms (sharing) so the repulsion would be less.
But the lone pair electrons are under the attraction of only one atom so the relative repulsion is very high.
Which is followed by a bit less repulsion between lp-bp
That is why
lp-lp>lp-bp>bp-bp.
This is because the bond pair electrons are under the force of attraction of 2 atoms (sharing) so the repulsion would be less.
But the lone pair electrons are under the attraction of only one atom so the relative repulsion is very high.
Which is followed by a bit less repulsion between lp-bp
That is why
lp-lp>lp-bp>bp-bp.
tony19:
This is all according to the Valence Shell Electron Pair Repulsion Theory(VSEPR) Theory.
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