A nitrogen can undergo sp hybridization and then become joined to carbon by a tr

Question

A nitrogen can undergo sp hybridization and then become joined to carbon by a triple bond to give the structural unit —C?N:. This triple bond consists of one ? and two bonds.

1.

Write the orbital diagram for sp hybridized nitrogen as it would be before any bonds form. Select all of the following that describe the orbital diagram for nitrogen.

3. Again using sketches, describe all the bonds in hydrogen cyanide, H —C?N:. What is the single best description of the H—C bond?

4. What is the likeliest H—C—N bond angle in HCN?

Explanation / Answer

1) One s and one p orbital combine to form two sp hybrid orbitals.

There are two unhybridized p orbitals.

2) The bond is overlap of two sp hybridized orbitals, one from C and the other from N.

3) The H—C bond is a bond formed by overlap of an s orbital on H and an sp orbital on C.

4) HCN bond angle = 1800

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