Assertion: Barium is not required for normal biological function in human.
Reason: Barium does not show variable oxidation state.

Assertion (A): Barium is not required for normal biological function in human beings. Reason (R ): Barium does not show variable oxidation states.

Assertion (A): Barium is not required for notmal biological function in human beings. Reason (R ): Barium does not show variable oxidation states.

Fluorine does not show variable oxidation state due to :

Which halogen does not show variable oxidation state?

Which element does not show variable oxidation state ?

Fluorine does not show variable oxidation state, because of

Give reasons : Actinoids show variable oxidation states

Give reasons: Actinoids show variable oxidation states.

Transition element which does not show variable oxidation state is