3 -10.1 points 0/4 Submissions Used Question Part 1 2 3 Total -/0.02-0.02-/0.02

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3 -10.1 points 0/4 Submissions Used Question Part 1 2 3 Total -/0.02-0.02-/0.02 0.04 Points Electrons in an unfilled shell are called Let M stand for any alkali metal atom. In the reactions of alkali metals with water 2M (s) + 2H20 (I)-2 Mg (s) + H2O (g) electrons (aq) + H2 (g) (s) + H2 (9) Let M stand for any alkaline earth metal atom larger than Mg. In the reactions of M with water M (s) + 2H20 (I) (aq) H2 (g) 4. +-10.1 points 0/4 Submissions Used Consider the molecules Cso2, Na2O, K202, Mgo, and H202 and answer the questions below. If the doesn't matter.

Explanation / Answer

Electrons in an unfilled shell are called valency electrons

2M(s) + 2H2O(l) ----------> M(OH)2(aq) + H2(g)
   Mg(s) + H2O(g) -----------> MgO(s) + H2(g)

    M(s) + 2H2O(l) ---------> M(OH)2 (aq) + H2(g)

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