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9. Which of the following is considered as the “king of metals"?
A. Copper
B. Hafnium C. Iron D. Zinc
10. Which element has a chemical symbol derived from its origin?
A. Argon
B. Magnesium C. Mercury D. Platinum​


Sagot :

Answer:

9.a. Copper

10.C.mercury

Explanation:

I don't know

Answer:

9. C. IRON

10.B.MANESIUM

Explanation:

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