Chemistry - Complete d-block Question with Solution | TestHub

Among 3d-block metals, only copper forms an oxide in the +1 oxidation state.

Among 3d-block metals, scandium is the only element that cannot form an oxide in the +2 oxidation state.

Vanadium, Chromium and Manganese all form fluorides corresponding to their highest oxidation states.

Copper cannot form a fluoride in the +1 oxidation state nor an iodide in the +2 oxidation state.