Two elements $A$ and $B$ have same number of valence electrons in their atom have similar:

combining capacity

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chemical properties

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atomic sizes

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metallic character

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Solution

The correct option is C chemical properties
Chemical properties depend upon the number of valence electrons that take part in a chemical reaction. Therefore if $A$ & $B$ have same no. of valence electrons, they will have similar chemical properties.

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Similar questions

Two elements X and Y belong to group 1 and 2 respectively in the same period of periodic table.

Compare them with respect to:

(i)The number of valence electrons in their atoms

(ii)Their valencies

(iii)Metallic character

(iv)The sizes of their atoms

(v)The formulae of their oxides

(vi) The formulae of their chlorides

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