Organic Chemistry
The indicated C―C bond in butan-2-ylium involves an sp orbital which makes the bond shorter.
The indicated C―C bond in butan-2-ylium involves an sp2 orbital which makes the bond shorter.
The indicated C―C bond in butan-2-ylium involves an sp3 orbital which makes the bond shorter.
The indicated C―C bond in butan-2-ylium involves a p orbital which makes the bond shorter.