In terms of polar character which one of the following orders is

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 Multiple Choice QuestionsMultiple Choice Questions

631.

Which one of the following has (have) octahedral geometry?

(i) SbCl6-

(ii) SnCl62-

(iii) XeF6

(iv) IO65-

  • (i), (ii) and (iv)

  • (ii), (iii) and (iv)

  • (i), (ii) and (iii)

  • All of these


632.

Among the following compounds of boron, the species which also forms π-bond in addition to σ-bonds is

  • BH3

  • B2H6

  • BF3

  • BF4-


633.

Number of bonding electron pairs and number of lone pairs of electrons in ClF3, SF4, BrF5 respectively are

  • 3, 2, 4, 2, 5, 2

  • 3, 1, 4, 1,5, 2

  • 3, 1, 4, 2, 5, 1

  • 3, 2, 4, 1, 5, 1


634.

What is the bond order of N2 ?

  • 3

  • 4

  • 2

  • 1


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635.

Match the following
List I List II
(a) PCl3 (i) Square planar
(b) BF3 (ii) T-shape
(c) ClF3 (iii) Trigonal pyramidal
(d) XeF4 (iv) See- saw
  (v) Trigaonal planar

  • (a)    (b)  (c)  (d)
    (iv)   (ii)   (i)    (iii)

  • (a)    (b)   (c)    (d)
    (iii)   (v)   (ii)    (iv)

  • (a)  (b)    (c)   (d)
    (iii)   (v)   (ii)   (i)

  • (a)   (b)   (c)    (d)
    (iii)   (v)   (ii)   (v)


636.

The hybridisation of each carbon in the following compound respectively is CH3-CO-CH2CN

  • sp3,sp2,sp3,sp

  • sp3,sp3,sp2,sp

  • sp3,sp2,sp, sp3

  • sp2,sp, sp3, sp3


637.

The paramagnetic species is

  • SiO2

  • TiO2

  • BaO2

  • KO2


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638.

In terms of polar character which one of the following orders is correct?

  • H2S < NH3 < H2O < HF

  • H2O < NH3 < H2S < HF

  • HF < H2O < NH3 < H2S

  • NH3 < H2O < HF < H2S


A.

H2S < NH3 < H2O < HF

More be the electronegativity difference, more be the polar character, thus correct order.

H2S < NH3 < H2O < HF


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639.

The bond lenght (pm) of F2, H2, Cl2 and I2, respectively is:

  • 144, 74, 199, 267

  • 74, 144, 199, 267

  • 74, 267, 199, 144

  • 144, 74, 267, 199


640.

Which one of the following statement is correct for d4 ions [ P = pairing energy]

  • When Δ0 > P, low-spin complex form

  • When Δ0 < P, low-spin complex form

  • When Δ0 > P, high-spin complex form

  • When Δ0 > P, both high and low-spin complex form


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