The central carbon atom of a free radical contains from Chemistr

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 Multiple Choice QuestionsMultiple Choice Questions

81.

Geometry of SiO44- anion is

  • tetrahedral

  • trigonal

  • trihedral

  • pentagonal


82.

Chlorine (Cl17) free radical contains how many electrons around the nucleus?

  • 16

  • 17

  • 18

  • 19


83.

The atomic number of Sn is 50. The shape of gaseous SnCl2 molecule is

  • Cl-Sn-Cl


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84.

The central carbon atom of a free radical contains

  • 6 electrons

  • 7 electrons

  • 8 electrons

  • 10 electrons


B.

7 electrons

The central carbon atom of a free radical contains seven electrons. Free radicals are paramagnetic due to the presence of an unpaired electron and are formed by homolysis of covalent bonds either by heat or by light.


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85.

Reaction for the formation of NaCl is

  • Na(g) + Cl2(g) → NaCl(s)

  • Na(s) + 12Cl2(g) → NaCl(s)

  • Na(g) + 12Cl2(g) → NaCl(s)

  • Na(g) + Cl2(g) → NaCl(g)


86.

The hybridization state of C atom in butendioic acid is

  • sp2

  • sp3

  • Both (a) and (b)

  • sp


87.

Which of the following has least bond energy?

  • N22-

  • N2-

  • N2+

  • N2


88.

Which of the following species has highest bond energy?

  • O22-

  • O2+

  • O2-

  • O2


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89.

Which of the following is least hydrolysed?

  • BeCl2

  • MgCl2

  • CaCl2

  • BaCl2


90.

The geometry of I3- is

  • triangular

  • linear

  • tetrahedral

  • T-shape


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