Question

Identify the metal that forms colourless compounds.

विकल्प

• Iron (Z = 26)

• Chroorium (Z = 24)

• Vanadium (Z = 23) 

• Scandium (Z = 21)

Answer 1

Scandium (Z = 21)

Explanation:

For scandium (Z = 21) electronic configuration is 4s²3d¹.

After the removal of 3 electrons; (Sc³⁺), acquires a stable configuration (4s⁰d⁰).

Hence, it forms colourless compounds.