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NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

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The number and type of bonds between two carbon atoms in CaC2\mathrm{Ca}{\mathrm{C}_2} are:
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Correct option: B
One sigma (σ)\left( \mathrm{\sigma } \right)and two pi (π)\left( \mathrm{\pi } \right)-bonds
Option B (One sigma (σ)\left( \mathrm{\sigma } \right)and two pi (π)\left( \mathrm{\pi } \right)-bonds) is correct because in CaC2CaC_2, the C22−C_2^{2-} ion has a triple bond between the carbon atoms, consisting of one sigma and two pi bonds.

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