Question: Calcium carbide, CaC2, has an ionic structure with ions Ca2+ and C22. Give the valence bond description of the bonding in the C22 ion. Now

Calcium carbide, CaC2, has an ionic structure with ions Ca2+ and C22. Give the valence bond description of the bonding in the C22 ion. Now write the MO configuration of this ion. What is the bond order according to this configuration? Compare the valence bond and molecular orbital descriptions.

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