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Standard X
Chemistry
Combination Reaction
The metal tha...
Question
The metal that forms nitride by reacting directly with
N
2
of air,is:
A
K
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B
C
s
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C
L
i
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D
R
b
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Solution
The correct option is
D
L
i
Only
L
i
react directly with
N
2
out of alkali metals
6
L
i
+
N
2
→
2
L
i
3
N
Hence, the correct option is
C
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Similar questions
Q.
The metal that forms a nitride by reacting directly with atmospheric
N
2
is:
Q.
The metal that forms a nitride by reacting directly with atmospheric
N
2
is:
Q.
The alkali metal that reacts with nitrogen directly to form nitride is:
Q.
Consider the following statements :
(I)
C
s
+
ion is more highly hydrated than other alkali metal ions.
(II) Among the alkali metals
L
i
,
N
a
,
K
,
and
R
b
,
L
i
has the higher melting point.
(III) Among the alkali metals, only
L
i
forms a stable nitride by direct combination.
Q.
Comment on each of the following observations:
(a) The mobilities of the alkali metal ions in aqueous solution are
L
i
+
<
N
a
+
<
K
+
<
R
b
+
<
C
s
+
.
(b) Lithium is the only alkali metal to form a nitride directly.
(c)
E
⊖
for
M
2
+
(
a
q
)
+
2
e
−
→
M
(
s
)
(where
M
=
C
a
,
S
r
or
B
a
) is nearly constant.
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