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KEAM 2019 Physics and Chemistry Paper
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© examsnet.com
Question : 89
Total: 120
The carbon atoms in calcium carbide are held by
Ionic bonds
Two sigma bonds
Two sigma and one coordinate bond
One sigma and two π bonds
One sigma and one π bond
Validate
Solution:
The carbon atoms in calcium carbide are held together by one sigma and two
pi
-bonds.
The structural representation of
C
a
C
2
is
[
:
C
≡
C
:
]
2
−
Ca
2
+
This can be produced industrially from a mixture of lime and coke in an electric are furnace at
2
,
200
∘
C
.
© examsnet.com
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