EASY
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A hydrogen atom is paramagnetic. A hydrogen molecule is
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Important Questions on Chemical Bonding and Molecular Structure
HARD
Decreasing order of stability of and is:
MEDIUM
In which of the following pairs of molecules/ions, both the species are not likely to exist?
MEDIUM
Consider the following species:
(i)
(ii)
(iii)
Among the following, sigma bond alone is present in -
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.
MEDIUM
Two pi and half sigma bonds are present in:
EASY
Which one of the following pairs of species has the same bond order?
EASY
The diamagnetic species is:
MEDIUM
According to molecular orbital theory, which of the following molecule will not be available?
EASY
Which one of the following molecules is expected to exhibit paramagnetic behaviour?
HARD
Which of the following options represents the correct bond order?
MEDIUM
Which one of the following properties is not shown by NO ?
EASY
Stability of the species increases in the order of
MEDIUM
Which of the following has unpaired electron(s)?
EASY
Which of the following is paramagnetic?
MEDIUM
Which one of the following molecules is paramagnetic?
HARD
Among the following molecules/ ions,
Which one is diamagnetic and has the shortest bond length?
HARD
Assuming mixing is NOT operative, the paramagnetic species among the following is
EASY
Which of the following species is not paramagnetic?
MEDIUM
The correct bond order in the following species is:
HARD
In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?
