Thank you for reporting, we will resolve it shortly
Q.
In which of the following molecules, the type of hybridization changes when
Chemical Bonding and Molecular Structure
Solution:
In $NH_3$, the hybridisation of $N$ is $sp^3$. In $NH_4^+$, the
hybridisation remains $sp^3$. In $AlH_3$, the hybridisation of $Al$ is $sp^2$. And, in $AlH_4^-$, it becomes $sp^3$.