In the complex ${\mathrm{K}}_2\mathrm{Fe}\left[\mathrm{Fe}{\left(\mathrm{CN}\right)}_6\right]$

The total number of $\mathrm{\sigma }$ and $\mathrm{\pi }-$bonds present in the following compound are

Given below are two statements.

Statement I: The presence of weaker $\mathrm{\pi }$-bonds make alkenes less stable than alkanes

Statement II: The strength of the double bond is greater than that of carbon-carbon single bond.

In the light of the above statements, choose the correct answer from the options : given below.

Given below are two statements : One is labelled as Assertion $\mathrm{A}$ and the other is labelled as Reason $\mathrm{R}$

Assertion $\mathrm{A}$ : Zero orbital overlap is an out of phase overlap.

Reason $\mathrm{R}$ : It results due to different orientation/ direction of approach of orbitals.

In the light of the above statements. Choose the correct answer from the options given below

The potential energy $\left(y\right)$ curve for ${\mathrm{H}}_2$ formation as a function of internuclear distance $\left(x\right)$ of the $\mathrm{H}$ atoms is shown below.

The bond energy of ${\mathrm{H}}_2$ is :