Biology Forums - Study Force

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) copper
B) magnesium
C) sodium
D) sulfur
E) mercury

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Thanks!

Good luck with the rest, bye for now