Question

Statement 1 : $H_2$ molecule is more stable than $He-H$ molecule.
Statement 2 : The antibonding electron in $He-H$ molecule decreases the bond order thereby the stability.

• A. If both Statement $1$ and Statement $2$ are true and the statement $2$ is the correct explanation of the statement $1$
• B. If both Statement $1$ and Statement $2$ are true but statement $2$ is not the correct explanation of the statement $1$
• C. If Statement $1$ is true but Statement $2$ is false
• D. If Statement $1$ is false but Statement $2$ is true

Answer 1

Answer: (A)

Bond order for $H_2 = 1$
Bond order for $He - H = \frac{1}{2}$.