Acetylene (c2h2) has a tendency to lose two protons (h1) and form the carbide ion (c2 22), which is present in a number of ionic compounds, such as cac2 and mgc2. describe the bonding scheme in the c2 22 ion in terms of molecular orbital theory. compare the bond order in c2 22 with that in c2.

alfred von schlieffen, german army chief of staff, was given instructions to devise a strategy that would be able to counter a joint attack. in december, 1905, he began circulating what later became known as the schlieffen plan. schlieffen argued that if war took place it was vital that france was speedily defeated.

the answer is c.the valence of the atoms combine .