Chemical Bonding and Molecular Structure Test

Result

Chemical Bonding and Molecular Structure Test - 1

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Weekly Quiz Competition

Question 1
1 / -0

For which of the elements of different groups, the change in nonpolar covalent radii is maximum?

A
Groups 1 and 2

B
Groups 14 and 15

C
Groups 16 and 17

D
Groups 17 and 18

Solution

Inert gases has the largest atomic radii and also the change from Group 17 to Group 18 is maximum
Hence, option D is correct.
Question 2
1 / -0

The molecular orbital formed by the addition overlap of atomic orbitals is called ______. Whereas, the molecular orbital formed by the subtraction overlap of atomic orbitals is called_______.

A
Bonding Molecular Orbital, Anti-bonding Molecular Orbital

B
Anti-bonding Molecular Orbital, Bonding Molecular Orbital

C
Both A and B may be correct

D
None of these

Solution

The molecular orbital formed by the addition overlap (constructive interference of waves) of atomic orbitals is called

Bonding Molecular Orbital (BMO) and the, the molecular orbital formed by the subtraction overlap of atomic orbitals is called Anti-bonding Molecular Orbital (ABMO).
Question 3
1 / -0

The no. of unpaired electrons in O₂ molecule is-

A
Zero

B
1

C
2

D
3

Solution

bond order of O₂ is 1/2 [N_a-N_b]

= 1/2 [10-6] =2

Though, O₂ is not diamagnetic because in the molecular orbital diagram of O₂molecule, it may be noted that it contains two unpaired electrons in ∏^*2p_x and ∏^*2p_y molecular orbitals.