all questions are 3 marks
7. (a) Define activity series of metals. Arrange the metals : Gold, Iron, Sodium and calcium in the order of
their decreasing reactivity.
(b) Why metals are electropositive but non-metals are electronegative in nature? Write equations.
8. (a) Write the chemical reaction of Magnesium with
i) oxygen ii) water iii) acid
(b) We prefer alloys than native metals. Why?
Answers
Answered by
10
Answer:
oxygen and water....,.......
Answered by
2
Answer:
your answer is oxygen and water
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