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.

NCERT Class X
Science - Exemplar Problems

Chapter_Periodic Classification of Elements

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Answers

2015-05-29T17:32:04+05:30
I THINK ANSWER COULD BEĀ ISOTOPES.
FOR EXAMPLE:
ISOTOPES OF HYDROGEN
THEY ARE : PROTIUM, DEUTERIUM AND TRITIUM.

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