Chemical Bonding & Molecular Structure Test

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Chemical Bonding & Molecular Structure Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Minimum ionic character is shown by ___________.

A
FeCl₂

B
SnCl₂

C
AlCl₃

D
MgCl₂

Solution

It is correct. It has the maximum charge, smaller size of cation, larger size of anion. So, least ionic character.
Question 2
1 / -0

Iodine heptafluoride has a structure of ___________.

A
square pyramid

B
trigonal bipyramid

C
octahedral

D
pentagonal bipyramid

Solution

Here sp³d³ hybridisation will occur forming pentagonal bipyramid structure by 7 orbitals.
Question 3
1 / -0

Xeon has maximum number of lone pairs in ___________.

A
XeO₃

B
XeF₄

C
XeF₆

D
XeF₂

Solution

XeF₂has 3 lone pairs- maximum.
Question 4
1 / -0

CaC₂ is associated with which types of bonds?

A
One sigma and two pi

B
One sigma and one pi

C
Two sigma and one pi

D
Two sigma and two pi

Solution

Carbide ion is C₂^2-and is structured with two carbons with triple bond, i.e. one sigma, two pi.
Question 5
1 / -0

Which of the following has the shortest bond length?

A
O₂²⁺

B
O₂⁺

C
O₂^-

D
O₂^2-

Solution

High bond order => Short bond length
Bond order = 3
Question 6
1 / -0

Which of the following options represents isoelectronic species?

A
C₂^2-, O^2-, CO, NO

B
NO⁺, C₂^2-, CN^-, N₂

C
CN^-, N₂ , O₂^2-, CO₂^2-

D
N₂, O₂^-, NO⁺, CO

Solution

All have 14 electrons. So, they are isoelectronics.
Question 7
1 / -0

Which of the following have the same bond length?

A
CN^- and NO⁺

B
CN^- and CN⁺

C
O^2-and CN^-

D
NO⁺and CN⁺

Solution

Same bond length means same bond order. Both CN^- and NO⁺have bond order of 3.
Question 8
1 / -0

Diamagnetism is shown by _________.

A
O₂^2-

B
O₂⁺

C
O₂

D
NO

Solution

Correct option. This species has 18 electrons, which are filled in such a way that all molecular orbitals are fully filled, so diamagnetic.
Question 9
1 / -0

In which of the following is the strongest hydrogen bond present?

A
O-H....N

B
F-H....F

C
O-H....O

D
O-H....F

Solution

Fluorine has the highest electronegativity and thus, has the strongest bond.
Question 10
1 / -0

Bond angle of one hundred nine degree and twenty eight minutes is found in _________.

A
NH₃

B
H₂O

C
C⁺H_⁵

D
N⁺H₄

Solution

It has an bond angle of 109^o 28'. tetrahedral structure, sp³hybridised.
Question 11
1 / -0

Energy of lattice of compounds having charge on them (i.e. ions) depends on __________.

A
packing of ions only

B
size of ion only

C
charge and size of ion

D
charge on the ion only

Solution

Greater the charge and smaller the radius, greater the polarising power and thus, greater the covalent nature. This leads to increase in lattice energy.
Question 12
1 / -0

P₄O₁₀has ______ number of P-O bonds.

A
17

B
16

C
15

D
6

Solution

Number of P-O bonds in is P₄O₁₀16.
Question 13
1 / -0

In which of the following compounds is bond angle found to be the smallest?

A
SO₂

B
OH₂

C
SH₂

D
NH₃

Solution

Bond angle of SH₂is 90^o_,which is the smallest among the following.
Question 14
1 / -0

Which of the following compounds is present in the tetrahedral structure?

A
XeF₄

B
SF₄

C
BF₄^-

D
[Ni(CN)₄]^2-

Solution

BF₄^- has a regular tetrahedral structure.
Question 15
1 / -0

Number of lone pairs in Xenon difluoride, Xenon tetrafluoride and Xenon hexafluoride are _________.

A
3, 2, 1

B
2, 4, 6

C
1, 2, 3

D
6, 4, 2

Solution

XeF₂ in first exited form is 5s² 5p⁵ 5d¹, i.e. 3 lone pairs. Similarly XeF₄ has 2 lone pairs and XeF₆ has 1 lone pair.

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Re-Attempt Weekly Quiz Competition

Chemical Bonding & Molecular Structure Test - 3

Result

Chemical Bonding & Molecular Structure Test - 3

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SHARING IS CARING

Question 1

FeCl2

SnCl2

AlCl3

MgCl2

Solution

Question 2

square pyramid

trigonal bipyramid

octahedral

pentagonal bipyramid

Solution

Question 3

XeO3

XeF4

XeF6

XeF2

Solution

Question 4

One sigma and two pi

One sigma and one pi

Two sigma and one pi

Two sigma and two pi

Solution

Question 5

O22+

O2+

O2-

O22-

Solution

Question 6

C22-, O2-, CO, NO

NO+, C22-, CN-, N2

CN-, N2 , O22-, CO22-

N2, O2-, NO+, CO

Solution

Question 7

CN- and NO+

CN- and CN+

O2- and CN-

NO+ and CN+

Solution

Question 8

O22-

O2+

O2

NO

Solution

Question 9

O-H....N

F-H....F

O-H....O

O-H....F

Solution

Question 10

NH3

H2O

C+H5

N+H4

Solution

Question 11

packing of ions only

size of ion only

charge and size of ion

charge on the ion only

Solution

Question 12

17

16

15

6

Solution

FeCl₂

SnCl₂

AlCl₃

MgCl₂

XeO₃

XeF₄

XeF₆

XeF₂

O₂²⁺

O₂⁺

O₂^-

O₂^2-

C₂^2-, O^2-, CO, NO

NO⁺, C₂^2-, CN^-, N₂

CN^-, N₂ , O₂^2-, CO₂^2-

N₂, O₂^-, NO⁺, CO

CN^- and NO⁺

CN^- and CN⁺

O^2-and CN^-

NO⁺and CN⁺

O₂^2-

O₂⁺

O₂

NH₃

H₂O

C⁺H_⁵

N⁺H₄

SO₂

OH₂

SH₂

NH₃

XeF₄

SF₄

BF₄^-

[Ni(CN)₄]^2-