Q. Which of the following statements concerning transition elements is false?
A) They are all metals.
B) They easily form complex coordination compounds.
C) Compounds containing their ions are mostly coloured.
D) They show multiple oxidation states always differing by units of two.
Explanation
(d)
Transition element exhibit variable oxidation states because their $d$-electrons also take part in bonding along with $s$-electrons. However, the difference between two oxidation states is not always two.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.