Answer:
1. A
2. B & C
3. D
4. C
5. none of the above all elements are covalent compound
6. D
7. B, C or D
8. B
9. D
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Answers & Comments
Answer:
1. A
2. B & C
3. D
4. C
5. none of the above all elements are covalent compound
6. D
7. B, C or D
8. B
9. D