An element has nine positive charges in its nucleus its common oxidation state is

An element has an electronic configuration [Ar]^(3d) in its + 3 oxidation state. What will be the electronic configuration of its atom ?

The element which has a tendency to show positive and negative oxidation states is

The atom of which element has no neutron in its nucleus ?

An element that never has a positive oxidation number in any of its compounds is "_______________" .

An element that never has a positive oxidation number in any of its compounds is________

A transition element X has a configuration [Ar] 3d^(4) in its + 3 oxidation state. Its atomic number is