Which one of the following characteristics of the transistion metals is associated with higher catalytic activity? (a) High enthalpy of atomisation (b) Paramagnetic behaviour (c) Colour of hydrate ions (d) Variable oxidation states

Which one of the following characteristics of the transistion metals i

1.	Which one of the following characteristics of the transistion metals is associated with higher catalytic activity? (a) High enthalpy of atomisation (b) Paramagnetic behaviour (c) Colour of hydrate ions (d) Variable oxidation states
Answer» (d) VARIABLE OXIDATION statesExplanation:Due to LARGE surface AREA and variable oxidation state, d - BLOCK elements shows catalytic activities.