Please solve the 10 th question.
Q.10. The given table shows elements with same number of electrons in its valence shell.
Elements A B C
m.p. 63.0 180.0 97.0

State :
(i) Whether these elements belong to same group or period.
(ii) Arrange them in order of increasing metallic character.

Dear student,
(i) Since the elements have the same number of electrons in its valence shells, they all belong to the same group because the periodic table was designed in such a manner that the similar properties elements lie in the same group.

(ii) The arrangement of the elements in increasing the order of the metallic character is as follows: A<C<B. This is because the metallic character is directly proportional to the melting point of elements. So, metallic character increases with the increasing melting point.
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