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Question

The catalystic activity of transition metals and their compounds is ascribed mainly to:

A
their unfilled d-orbitals
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B
their ability of adopt variable oxidation states
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C
their chemical reactivity
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D
their magnetic behaviour
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Solution

The correct option is A their ability of adopt variable oxidation states
The catalytic activity of transition metals and their compounds is ascribed mainly due to their ability to adopt variable oxidation states.

Examples: +5V2O5, +3V2O3

2SO2+O2V2O5−−2SO3

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