Question

4. Which of the following metals will not display hydrogen from water
a- sodium
b-pottasium
c- calcium
D,- copper
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Answer 1

Answer:

Silver, and chromium, are being less active, hence they cannot displace the hydrogen from cold water.

THERE ARE NO OPTIONS ABOVE WHICH MATCH THE CRITERIA.

SO, NONE OF THE ABOVE IS THE ANSWER.

Answer 2

Answer:

b-pottasium

Explanation:

Silver, and chromium, are being less active, hence they cannot displace the hydrogen from cold water