state the reason why:-
a) Elements of the same group have similar chemical properties
b) Elements of same period have different chemical properties

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Solution

Element of same group have similar chemical properties because they have same general electronic configuration. While in period elements vary in number of shell therefore shows different chemical properties.

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Similar questions

Assertion: Elements with the same chemical properties are kept in the same group.

Reason: Elements in a group have the same number of electrons in the outermost shell hence they have similar chemical properties.

Why do the elements in the same group have similar chemical properties?

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