List of top Chemistry Questions on Molecular Stability asked in JEE Main

\( \text{SF}_4 \) is isostructural with:

Given below are two statements: Statement (I): The correct sequence of bond lengths in the following species is: \[ O_2^+<O_2<O_2^-<O_2^{2-} \] Statement (II): The correct sequence of number of unpaired electrons in the following species is: \[ O_2>O_2^+>O_2^->O_2^{2-} \] In the light of the above statements, choose the correct answer.

Statement-1: \( \text{ClF}_3 \) has 3 possible structures.
Statement-2: \( \text{III} \) is the most stable structure due to least lone pair-bond pair (lp-bp) repulsion.

Which of the following options is correct?

A molecule with the formula \( AX_4Y \) has all its elements from p-block. Element A is rarest, monoatomic, non-radioactive from its group and has the lowest ionization enthalpy value among A, X, and Y. Elements X and Y have first and second highest electronegativity values respectively among all the known elements.
The shape of the molecule is:

Which one of the carbocations from the following is most stable?