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Question
Chemistry
Methanides are
Q. Methanides are
1994
238
The s-Block Elements
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A
M
g
2
C
3
,
B
e
2
C
,
A
l
4
C
3
and
C
a
C
2
B
M
g
2
C
3
,
B
e
2
C
and
A
l
4
C
3
C
B
e
2
C
,
A
l
4
C
3
and
C
a
C
2
D
B
e
2
C
and
A
l
4
C
3
Solution:
Methanides give
C
H
4
on reaction with
H
2
O
.
A
l
4
C
3
+
12
H
2
O
→
4
A
l
(
O
H
)
3
+
3
C
H
4
B
e
2
C
+
4
H
2
O
→
2
B
e
(
O
H
)
2
+
C
H
4