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Chemistry
Which of the following metals directly combine with hydrogen gas to give a hydride?
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Q. Which of the following metals directly combine with hydrogen gas to give a hydride?
Hydrogen
A
$Au$
9%
B
$Ni$
10%
C
$Ca$
73%
D
$Cu$
8%
Solution:
Hydrogen directly combines with highly reactive metals to give hydrides.
$Ca +H_2 \to CaH_2$