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The schematic atomic structures of three...

The schematic atomic structures of three elements X, Y and Z are given as:

Which of the following statements is/are incorrect? I. Z can form `ZCl_3` and `ZCl_5`. II. Y exists in monoatomic form. III. X and Z combine to form `X_3 Z` type compound. IV. X and Y combine to form `XY_2` type compound. V. X will gain two electrons to form a stable compound.

A

I and II only

B

I, II and IV only

C

II, IV and V only

D

III, IV and V only

Text Solution

Verified by Experts

The correct Answer is:
D
Number of electrons in X = 12 Number of electrons in Y = 10
Number of electrons in Z = 15 I. Z has five valence electrons, thus, it can form ZClz and ZCl, as it shows valency of +3 and +5. II. Y is neon and exists in monoatomic form. III.

IV. Y has a complete octet. Thus, it does not combine with any element. V. X will lose two electrons to form a stable compound. It shows the valency of +2.
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