Question #13cc9

1 Answer
Apr 11, 2017

Answer:

Hydrogen #H_2#

Explanation:

The reaction goes like this:

#Mg(s)+2H^+(aq) ->Mg^(2+)(aq) +H_2(g)#

Or in words: magnesium donates its two valence electrons to two hydrogen-ions (protons), and these combine to form one hydrogen molecule.