Question

Salts of which of the following groups are colourless?

विकल्प

• 1^st

• 2^nd

• 13^th to 17^th

• All of these

Answer 1

All of these

Explanation:

Elements belonging to groups 1, 2, and 13 to 17 are representative elements (normal elements). They do not contain incomplete d-orbitals, meaning their ions and salts are typically colourless, unlike transition elements (groups 3 to 12), which form coloured salts.