Chemical Bonding and Molecular Structure Test 44

Result

Chemical Bonding and Molecular Structure Test 44

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Weekly Quiz Competition

Question 1
1 / -0

In $$ XeO_3F_2 $$ the number of bond pairs on $$Xe$$ atom is:

A
5

B
2

C
0

D
4
Question 2
1 / -0

The order of number of lone pair of xenon in following compound is.

A
$$XeF_2 > XeF_4 > XeO_3 > XeO_4$$

B
$${XeF_6} > XeOF_4 > XeO_3F_2$$

C
$${XeO_6}^{4-} > {HXeO_4}^-$$

D
$${XeF_5}^- > XeF_2 > XeO_3 > XeO_4$$

Solution
Question 3
1 / -0

Which of the following compound has four bond pair and one lone pair?

A
$${ NH }_{ 4 }^{ + }$$

B
$${ ICI }_{ 4 }^{ - }$$

C
$${ SF }_{ 4 }$$

D
$${ XeF }_{ 4 }$$

Solution

$$SF_{4}$$
Stearic No.$$=\cfrac{6+4}{2}=5$$
Geometry$$\rightarrow $$Trigonal Bipyramidal
Hybridisation $$\rightarrow sp^{3}d^{2}$$

From the figure, we can say
No. of bond pair$$=4$$
No. of lone pair$$=1$$
Question 4
1 / -0

Which of the following molecules will have polar bonds but zero dipole moment?

A
$$ O_2 $$

B
$$ CHCI_3 $$

C
$$ CF_4 $$

D
None of these

Solution
Question 5
1 / -0

Which of the following compound has highest dipole moment?

A

B

C

D
Question 6
1 / -0

$$LiH + \underline {B}_2H_6 \rightarrow 2Li \underline{B}H_4$$

Find the change in hybridization of the underlined atom.

A
$$sp^2 \rightarrow sp^3$$

B
$$sp^3 \rightarrow sp^2$$

C
$$sp \rightarrow sp^3$$

D
None
Question 7
1 / -0

Which of the following species is polar?

A
$$IF_7$$

B
$$CIF_3$$

C
$$XeF_4$$

D
$$SiF_4$$

Solution

$${ ClF }_{ 3 }$$ $$\left( { AB }_{ 3 }{ E }_{ 2 } \right) $$
triagonal bipyramidol
The two axidl $$Cl-F$$ bonds, cancel their dipole moments each. The two equitorial lone pairs have a effective dipole moment in opposite direction to $$Cl-F$$ dipole moment in equitoridl plane
$$\Rightarrow$$ $${ ClF }_{ 3 }$$ is polar.
Question 8
1 / -0

For a diatomic molecule the dipole moment is 1.2 D and bond length is 1.0$$\overset { \circ }{ A } $$ then charge fraction on each atoms is:

A
$$12\%$$

B
$$18\%$$

C
$$25\%$$

D
$$29\%$$

Solution
Question 9
1 / -0

Which of the following is correct order of dipole moment.

A
$$CHC{L_3} > C{H_2}C{l_2} > C{H_3}Cl > CC{l_4}$$

B
$$C{H_3}Cl > C{H_2}C{l_2} > CHC{l_3} > CC{l_4}$$

C
$$C{H_2}C{l_2} > C{H_3}Cl > CHC{l_3} > CC{l_4}$$

D
$$CHC{l_3} > C{H_3}Cl > C{H_2}C{l_2} > CC{l_4}$$

Solution
Question 10
1 / -0

Which of the following compound can exhibit hydrogen bonding?

A
$$NaH_2PO_4$$

B
$$Na_2HPO_3$$

C
$$NaH_2PO_2$$

D
$$NaPO_4$$

Solution