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

The angle between two covalent bonds is maximum in

• CH₄

• H₂O

• CO₂

• SO₂

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

CO₂ in isostructural with

• SnCl₂

• SO₂

• HgCl₂

• All of these

The number of sp³-hybridised carbon atoms in cyclohexene are

• 2

• 3

• 4

• 6

The type of hybridisation present in each carbon of benzene is

• sp³

• sp²

• sp

• None of these

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

Bond order of N₂ molecule is

• 3

• 2

• 1

• 0

Which of the following is a proper match?

$\frac{{\mathrm{r}}^{+}}{{\mathrm{r}}^{-}}$	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

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

• It is octahedral complex.

• t_2g orbital contains the e^- of metal.

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

• All of the above