Ammonium ions, NH$_4^+$ , are formed when ammonia gas reacts with hydrogen chloride gas.
Which statement about the changes that occur in this reaction is correct?
1 )
The dipole moment of an ammonium ion is greater than the dipole moment of an ammonia molecule.
2 )
The H−N−H bond angle decreases when an ammonium ion is formed.
The hybridisation of nitrogen does not change.
4 )
There is electron transfer from nitrogen to chlorine.
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