5s subshell represent that n is equal to 5 and l is equal to 0. 2p subshell represent that n is equal to 2 and l is equal to 1. 3d subshell represent that n is equal to 3 and l is equal to 2. The numbers gives us the value of n and the letter gives us the value of l. s means l = 0 p means l = 1 d means l = 2 f means l = 3
