If a molecule MX3 has zero dipole moment, the sigma bonding orbit

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

221.

Inoic bonds are usually formed by combination of elements with

  • high ionisation potential and low electron affinity

  • low ionisation potential and high electron affinity

  • high ionisation potential and high electron affinity

  • low ionisation potential and low electron affinity


222.

The angle between two covalent bonds is maximum in

  • CH4

  • H2O

  • CO2

  • SO2


Advertisement

223.

If a molecule MX3 has zero dipole moment, the sigma bonding orbital used by M (At. no. 13) are

  • pure p

  • sp- hybridised

  • sp2- hybridised

  • sp3- hybridised


C.

sp2- hybridised

If dipole moment of the molecule is zero, this will imply that the molecule is symmetrical or it has no lone pairs of electrons.

Electronic configuration of 13M - 1s2, 2s2, 2p6, 3s2, 3p1

Structure of MX3 is X-MX-X

So, number of molecular hybridisation = 3. Hence,sp2 hybrid orbitals are used.


Advertisement
224.

CO2 in isostructural with

  • SnCl2

  • SO2

  • HgCl2

  • All of these


Advertisement
225.

The number of sp3-hybridised carbon atoms in cyclohexene are

  • 2

  • 3

  • 4

  • 6


226.

The type of hybridisation present in each carbon of benzene is

  • sp3

  • sp2

  • sp

  • None of these


227.

If the value of bond order is zero, then

  • molecule will be stable

  • molecule will be unstable

  • molecule will be in ionic state

  • None of the above


228.

Bond order of N2 molecule is

  • 3

  • 2

  • 1

  • 0


Advertisement
229.

Which of the following is a proper match?
r+r- Shape
A. 0.115 - 0.225 i. Triangular
B. 0.225 - 0.414 ii. Tetrahedral
C. 0.414 - 0.732 iii. Cubic
D. 0.732 - 1 iv. Octahedral

  • A - i; B - ii; C - iv; D - iii

  • A - iii; B - ii; C - iv; D - i

  • A - i; B - iii; C - ii; D - iv

  • A - ii; B - iv; C - i; D - iii


230.

According to MOT which of the following is correct for potassium hexa cyano ferrate (III)?

  • It is octahedral complex.

  • t2g orbital contains the e- of metal.

  • For iron, overlapping between empty orbitals and ligand orbitals takes place.

  • All of the above


Advertisement