A) they show variable oxidation states
B) they do not form complex ions
C) they all exhibit diamagnetic character
D) they show poor electrical conductivity
Correct Answer: A
Solution :
Transition elements have incomplete d-orbitals (except II B group elements), hence, they show variable oxidation states. Most of them show paramagnetic behaviour, and they form complex ions. They are also good conductor of electricity. Silver is the best conductor of electricity.
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