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Read the following passage and answer th...

Read the following passage and answer the questions that follow.
Electron-precise compounds have the required number of electrons to write their conventional Lewis structures. All elements of group 14 form such compounds which are tetrahedral in geometry. Electron - rich hydrides have excess of electrons which are present as lone pairs. Elements of groups 15-17 form such compounds. Metallic hydrides are formed by many d-block and f-block elements. These hydrides conduct heat and electricity though not as efficiently as their parent metals do. They are non-stoichiometric.
Incorrect statement among the following is

A

The electrical conductivity of CrH is less than that of Chromium.

B

The hydrides of N, O and F have lower boiling points than the hydrides of their subsequent group members.

C

For TiH and ZrH, the law of constant composition does not hold good

D

NiH and PdH are non-stiochiometric hydrides.

Text Solution

Verified by Experts

The correct Answer is:
B
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