74 Решение задачки по химии №07 443

48. The formation of covalent bonds between two unexcited atoms of chemical elements - electronic analogues: Pb and C is considered.
a) give a graphical explanation of the formation of covalent bonds between these atoms;
b) write down the electronic and valence scheme of the resulting molecule;
c) determine the order (multiplicity) of communication;
d) determine the valency of each element;
e) determine the number of b- and p-bonds.

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