Question

Which element in the 3d series can form dihalides?

• A. Sc
• B. Ti
• C. Mn
• D. Fe

Hint:

Transition metals like Titanium (Ti) and Iron (Fe) can form dihalides in their lower oxidation states, while higher oxidation states often lead to higher halide compounds.

Answer 1

The Correct Option is B

The ability to form dihalides depends on the oxidation state and the bonding capabilities of the element. In the 3d transition series: - Scandium (Sc) forms ScCl\(_3\) (a trihalide), not dihalides. - Titanium (Ti) can form TiCl\(_2\) (dihalide) in the +2 oxidation state. - Manganese (Mn) typically forms MnCl\(_2\) in the +2 state, but due to its high oxidation states, it can also form other halides, but dihalides are not common for Mn. - Iron (Fe) can form FeCl\(_2\) (dihalide) but is more commonly found in higher oxidation states like FeCl\(_3\). Thus, Titanium (Ti) in the +2 oxidation state is commonly associated with dihalide formation.