EASY
Earn 100

Which among the following is diamagnetic or paramagnetic , and ?
(a) and are diamagnetic and is paramagnetic
(b) and are diamagnetic and is paramagnetic
(c) is diamagnetic and and are paramagnetic
(d) and are diamagnetic and is paramagnetic

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Important Questions on Chemical Bonding and Molecular Structure
EASY
After understanding the assertion and reason, choose the correct option.
Assertion: In the bonding molecular orbital (MO) of electron density is increased between the nuclei.
Reason: The bonding MO is , which shows destructive interference of the combining electron waves.

HARD
Decreasing order of stability of and is:

MEDIUM
The correct bond order in the following species is:

EASY
Which of the following is paramagnetic?

HARD
In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?

EASY
The diamagnetic species is:

EASY
Which one of the following molecules is expected to exhibit paramagnetic behaviour?

MEDIUM
Which one of the following molecules is paramagnetic?

HARD
Among the species given below, the total number of diamagnetic species is ___.
(superoxide), dimeric sulphur in vapour phase,

EASY
Stability of the species increases in the order of

EASY
Which one of the following pairs of species has the same bond order?

HARD
According to Molecular Orbital Theory,

MEDIUM
Which one of the following properties is not shown by NO ?

EASY
Which of the following species is not paramagnetic?

MEDIUM
Which of the following has unpaired electron(s)?

HARD
Assuming mixing is NOT operative, the paramagnetic species among the following is

MEDIUM
According to molecular orbital theory, which of the following molecule will not be available?

MEDIUM
In which of the following pairs of molecules/ions, both the species are not likely to exist?

MEDIUM
Two pi and half sigma bonds are present in:

EASY
According to molecular orbital theory, which of the following is true with respect to and ?

