Question

# The number and type of bonds in $$C_{2}^{2-}$$ ion in $$CaC_2$$ are :

A
one σ bond and one π-bond
B
one σ bond and two π-bonds
C
two σ bonds and two π -bonds
D
two σ bonds and one π - bond

Solution

## The correct option is B one $$\sigma$$ bond and two $$\pi$$-bonds$$C_2^{2-}$$ ion $$\longrightarrow$$ $$[C\equiv C]^{2-}$$Dicarbide ion $$C_2^{2-}$$ has 1 sigma and 2 pi bonds. There are two $$\pi$$ bonds and one $$\sigma$$ bond in a triple bond.Hence, the correct option is $$(B)$$.Chemistry

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