Schematic representation of three atoms X, Y and Z is given as Which of the following statements is/are correct? I. X, Y and Z are isotopes. II. X and Z have the same valency. III. The increasing order of atomic numbers is `X lt Z lt Y. ` IV. X, Y and Z have stable electronic configurations.
A
II and III only
B
I and II only
C
II and IV only
D
None of these
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The correct Answer is:
A
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