Q. 503.8( 9 Votes )
A silvery-white meta
(a) Metal X is Magnesium, Mg.
(b) Powder Y is Magnesium oxide, MgO.
(c) Metal X combines with Oxygen to form powder Y
(d) Substance Z is Magnesium hydroxide, Mg(OH)2; Used as antacid to relieve indigestion.
(e) 2Mg + O2 2MgO
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