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Why the sigma orbital in the hydrogen molecule has a lower energy than the atomic orbital of the hydrogen atom?
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Important Questions on Chemical Bonding and Molecular Structure
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Which one of the following molecules is expected to exhibit paramagnetic behaviour?
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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.
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In which of the following pairs of molecules/ions, both the species are not likely to exist?
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Which of the following species is not paramagnetic?
HARD
According to Molecular Orbital Theory,
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Which of the following options represents the correct bond order?
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Stability of the species increases in the order of
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Which of the following has unpaired electron(s)?
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Two pi and half sigma bonds are present in:
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In which of the following processes, the bond order has increased and paramagnetic character has changed to diamagnetic?
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Which of the following is paramagnetic?
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Match List-I with List-II
| List-I | List-II | ||
| A | I | Dipole moment | |
| B | II | Bonding molecular orbital | |
| C | III | Anti-bonding molecualr orbital | |
| D | IV | Bond order |
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Which one of the following pairs of species has the same bond order?
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The correct bond order in the following species is:
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Which one of the following properties is not shown by NO ?
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According to molecular orbital theory, which of the following molecule will not be available?
MEDIUM
Which one of the following molecules is paramagnetic?
HARD
Decreasing order of stability of and is:
HARD
For diatomic molecules, the correct statement(s) about the molecular orbitals formed by the overlap of two orbitals is(are)
MEDIUM
How many nodes are there in the anti-bonding molecular orbital formed by two atomic orbitals?
