Which physical quantity has the dimensions $M{L^2}{T^{-1}}$?

The dimension of the ratio of angular momentum to linear momentum is

Dimensions of frequency are

$\left[ML^2 T^{-2} K^{-1}\right]$ is the dimensional formula of which physical quantity?

The force of interaction between two atoms is given by $F = \alpha \beta \exp \left( - \frac{x^2}{\alpha kt} \right)$,where $x$ is the distance,$k$ is the Boltzmann constant,$T$ is temperature,and $\alpha$ and $\beta$ are two constants. The dimension of $\beta$ is:

What is the dimensional formula of an electron volt $(eV)$, and what is its value in Joules $(J)$?