The following table shows the ranges in which the NMR signals appear for different types of hydrogens.
♦ Hydrogens located on aliphatic chains present values of $\delta$ close to 1. They increase slightly when going from primary to secondary or tertiary carbons.
♦ Allylic hydrogens are located between 1.5 and 2.1.
♦ Alpha hydrogens with respect to carbonyls and acid derivatives are between 2 and 2.5.
♦ The benzylic hydrogens between 2.3 and 2.7.
♦ The hydrogen of terminal alkynes between 2.5 and 3.
♦ Hydrogens attached to carbons with halogens between 2.5 and 4 depending on the electronegativity of the halogen
♦ The hydrogens of the hydroxyl group between 2.5 and 5. Very wide range due to the formation of hydrogen bonds.
♦ Hydrogens with ether-type oxygen bonded carbons between 3.3 and 4.5.
♦ Olefinic hydrogens between 3.5 and 6.5.
♦ Hydrogens bound to aromatic systems between 6.5 and 8.
♦ Hydrogen from aldehydes 9.5-10
♦ Hydrogen from carboxylic acid group above 11.