Multiple Choice
Consider the following properties of an element: (i) It is solid at room temperature.
(ii) It easily forms an oxide when exposed to air.
(iii) When it reacts with water,hydrogen gas evolves.
(iv) It must be stored submerged in oil.
Which element fits the above description the best?
A) sulfur
B) copper
C) mercury
D) sodium
E) magnesium
Correct Answer:

Verified
Correct Answer:
Verified
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