Question

Which of the following is not true about transition metals?

• A. They are diamagnetic substances
• B. They are paramagnetic substances
• C. They can form complexes
• D. They can show variable oxidation states

Answer 1

Answer: (A)

They are diamagnetic substances

Transition elements have one or more unpaired electrons. Due to the presence of these unpaired electrons, they show paramagnetism. Thus, transition metals are not diamagnetic.

They are good conductors of heat and electricity. They form complexes and show variable oxidation state as $d$ orbitals are gradually filled up in the transition series.

Therefore, option A is not true for transition elements.