Which metal is used in making electrical fibres?

Actinoids are mostly attacked by which acid?

Why does Zinc not show variable valency?

Where does the last electron of d-block element go?

What is the common oxidation state of scandium? (At. No. of Sc = 21)

The study of transition elements is useful.

Which of the following is Baeyer’sreagent?

What is the most common oxidation state of lanthanides?