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The molecule / ion with square pyramidal shape is
(4) BrF5
[figure]
BrF5: Br has 7 valence e- ⇒ 5 bp + 1 lp (sp3d2) ⇒ octahedral arrangement with one lone pair ⇒ square pyramidal
∵ PCl5, PF5: 5 bp + 0 lp (sp3d) ⇒ trigonal bipyramidal
[Ni(CN)4]2-: Ni2+ (d8) + strong-field CN- ⇒ dsp2 ⇒ square planar
Answer: (4)
The number of species from the following which are paramagnetic and with bond order equal to one is . H2, He2+, O2+, N22-, O22-, F2, Ne2+, B2
Number of compounds with one lone pair of electrons on central atom amongst following is . O3, H2O, SF4, ClF3, NH3, BrF5, XeF4
The total number of molecules with zero dipole moment among CH4, BF3, H2O, HF, NH3, CO2 and SO2 is .
The total number of anti bonding molecular orbitals, formed from 2s and 2p atomic orbitals in a diatomic molecule is .
Choose the polar molecule from the following:
The number of non-polar molecules from the following is . HF, H2O, SO2, H2, CO2, CH4, NH3, HCl, CHCl3, BF3