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Question
Chemistry
When sodium (Na) metal is dissolved in liquid ammonia ( NH 3), it imparts a blue colour to the solution. This blue colouration is due to
Q. When sodium
(
N
a
)
metal is dissolved in liquid ammonia
(
N
H
3
)
, it imparts a blue colour to the solution. This blue colouration is due to
1589
200
TS EAMCET 2018
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A
liquid
N
H
3
B
[
N
a
(
N
H
3
)
x
]
+
C
N
a
N
H
2
D
[
e
ˉ
(
N
H
3
)
x
]
Solution:
On dissolving sodium (Na) metal in liquid ammonia
(
N
H
3
)
blue colour solution is obtained due to formation of ammoniated electrons which absorbs energy in the visible region. Reaction involved is
N
a
+
(
x
+
y
)
N
H
3
⟶
[
N
a
(
N
H
3
)
x
+
]
+
[
e
(
N
H
3
)
y
]
−