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B
Both axial and equatorial plane have equal number of atoms
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C
As−Cl bond length is longer than As−F bond length
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D
Maximum five atoms can lie in equatorial plane
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Solution
The correct option is D Maximum five atoms can lie in equatorial plane The geomtery of As(CH3)F2Cl2 according to bents rule is:
The F (more electronegative atom) occupy axial position.
Now imagine this trigonal bipyramidal geomtery in 3-dimension.
(a) The plane which passes from (Cl1,F1,F2,As) contains 3 - halogen atoms.
(b) Axial plane →maximum atom = 5[F1,F2,As,C,H]
equatorial plane → maximum atom = 5[Cl1,Cl2,As,C,H]
(c) (B.L.)As−Cl>(B.L.)As−F
As size of Cl - atom >> F - atom.
(d) Equatorial plane → maximum atoms = 5[Cl1,Cl2,As,C,H]
Hence, all options are correct.