The number and type of bonds between two carbon atoms in \( \mathrm{CaC}_{2} \) are : (A) one si...

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The number and type of bonds between two carbon atoms in \( \mathrm{CaC}_{2} \) are :
(A) one sigma and one pi bond
(B) one sigma and two pi bonds
(C) one sigma and one and a half pi bond
(D) one sigma bond.
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