Properties of Transition Elements

Steps:

• Recall that transition elements are d-block metals with partially filled d-orbitals.
• Evaluate each option against key properties like color, position, and bonding.
• Identify the statement matching a defining characteristic.
• Confirm by eliminating incorrect options.

Why A is correct:

• Transition elements have incomplete d-subshells, leading to d-d electron transitions that absorb visible light and produce colored solutions in soluble salts.

Why the others are wrong:

• B: Transition elements span groups 3 to 12 in the d-block, not one group.
• C: They are metals with high melting points due to strong metallic bonding, not non-metals.
• D: Transition elements typically form alloys when mixed, not stable compounds like ionic ones.

Final answer: A