Class 12th Chemistry 2017 Set1 Delhi Board Paper Solution

Question 24

How is the variability in oxidation states of transition metals different from that of the p -block elements?

Answer

The variability in oxidation states of transition metal is due to the incomplete filling of d-orbitals in such a way, that their oxidation states differ from each other by unity, i.e. Fe2+ and Fe3+ etc. In case of p-block elements the oxidation state differ by units by two e.g. +3 and +5. Moreover in transition elements,the higher oxidation states are more stable for heavier element in a group, e.g. Mo+6 is more stable than Cr4+. In p-block elements the lower oxidation states are more stable for heavier members due to inert pair effect, e.g., Pb2+ is more stable than Pb4+.

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Class 12th Chemistry 2017 Set1 Delhi Board Paper Solution

How is the variability in oxidation states of transition metals different from that of the p -block elements?

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