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q239

0. An element X combines with hydrogen to form a
compound XH3. The element X is placed on the
right side of the periodic table. What is true about
the element X?
(a) Has 3 valence electrons
(b) Is a metal and is a solid
(c) Is a non-metal and is a gas
(d) Has 5 valence electrons
(e) XH3 reacts with water to form a basic
compound (NTSE Stage-II, 2014-15)

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