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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.
A non-stoichiometric hydride is formed by

A

Na

B

Mg

C

Cr

D

Al

Text Solution

Verified by Experts

The correct Answer is:
C
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