Which of the following compounds of Xenon has a pyramidal geometry?

Assertion $(A)$: Helium has the lowest boiling point $(4.2 \ K)$.
Reason $(R)$: The forces that exist between helium atoms are weak dispersion forces.

What is the oxidation state of $Xe$ in $XeOF_4$?

Hydrolysis of which of the following is not an example of a redox reaction?

The elements with atomic numbers $10$,$18$,$36$,$54$,and $86$ are all

Which of the following gas is/are called rare gas?