Elements have been arranged in the following sequence on the basis of their increasing atomic masses: F, Na, Mg, Al, Si, P, S, CI, Ar, K. a] Pick two sets of elements which have similar properties. b) The given sequence represents which law of classification of elements?

Elements have been arranged in the following sequence on the basis of

1.	Elements have been arranged in the following sequence on the basis of their increasing atomic masses: F, Na, Mg, Al, Si, P, S, CI, Ar, K. a] Pick two sets of elements which have similar properties. b) The given sequence represents which law of classification of elements?
Answer» Solution :a] Two SETS of elements that show similar properties are: F and Cl, Na and K. b] The GIVEN sequence represents elements NEWLANDS. law of octaves. As PER this law, elements are arranged in increasing order of their atomic masses and every 8TH element shows similar properties to that of the 1st element.