QUESTION 4 Give one example from the main-group chemistry that illustrates each

Question

QUESTION 4 Give one example from the main-group chemistry that illustrates each of the following descriptions: A nitrogen dioxide D. Covalent network solid B. Aluminum oxide Disproportionation reaction J C. Boron tri flouride A v Paramagnetic oxide D. diamond C Polar molecule that violates the octet rule E. Silicon H. Lewis acid F. nitrogen monoxide IF Amphoteric oxide G water B Semiconductor H. nitric acid E Strong oxidizing agent l. graphite, fullerene L Allotropes J. Chlorine gas Universal polar solvent 2 poi

Explanation / Answer

B . amphoteric acid

Al2O3 is amphoteric oxide due to less size of cation.

C. Lewis acid

BF3 is lewis acid . it contains vacant     p-orbital

E. semiconductor

Si is metalloid. it act as semiconductor

H. strong oxidicing agent

HNO3 is trong acid . so it act as strong oxidicing agent.

F. polar molecule violent the octet rule

           :.N=O

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