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The heavier elements of groups 13 and 14...

The heavier elements of groups 13 and 14 besides the group oxidation state exhibit another oxidation state which is two units lower than the group oxidation state and the stability of this lower oxidation state increases down the group. This concept which is commonly called inert pair effect has been used to explain many physical and chemical properties of the element of these groups.
Element of group 13

A

exhibit oxidation state of `+3` only

B

form `M^(+)` and `M^(3+)` ions

C

exhibit oxidation states of +1 and +3

D

form `M^(-)` and `M^(+)` ions

Text Solution

Verified by Experts

The correct Answer is:
C
Since compound in +3 oxidation state are more covalent, therefore, they do not form `M^(3+)` ions.
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The heavier members of 13 and 14 groups besides the group oxidation state also show another oxidation state. Down the group (darr) , the stability of higher oxidation state increases. This concept which is commonly called inert pair effect has been used to explain many physical and chemical properties of the element of these groups. Heavier members of group 13 exhibit oxidation state.

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The heavier members of 13 and 14 groups besides the group oxidation state also show another oxidation state. Down the group (darr) , the stability of higher oxidation state increases. This concept which is commonly called inert pair effect has been used to explain many physical and chemical properties of the element of these groups. The strongest reductant amoung the following is