CBSE Notes, Lectures

CBSE - Chemistry - Periodic Classification of Elements

Periodic Classification of Elements

Short Answer Type

Elements have been arranged in the following sequence on the basis of their increasing atomic masses. F, Na, Mg, Al, Si, P, S, Cl, Ar, K

Elements have been arranged in the following sequence on the basis of their increasing atomic masses. F, Na, Mg, Al, Si, P, S, Cl, Ar, K
(a) Pick two sets of elements which have similar properties.
 Ans. Na, Mg, Al and K are metals, while F and Cl are halogens. These make two sets of
elements.
(b) The given sequence represents which law of classification of elements?
 Ans. Mendeleev’s Law of Periodicity 

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