Question

27. A.) The three elements A, B and C with similar properties have atomic masses X, Y and Z respectively.
The mass of Y is approximately equal to the average mass of X and Z. What is such an arrangement of
elements called as? Give one example of such a set of elements.
B.) 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.
(b) The given sequence represents which law of classification of elements?​

Answer 1

Answer:

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