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Mark the incorrect statement :...

Mark the incorrect statement :

A

Semiconductors are basically insulator

B

In metal crystal condution occurs because molecular orbitals extend over the whole crystal and there is no energy gap between filled and unfilled molecular orbitals

C

Mobile electrons account for high thermal and electrical conduction of metals

D

When a metal is heated with a non-metals, the resulting compound is never an ionic compound

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The correct Answer is:
D
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