what is the correct representation for the subshell with n = 2 and l = 1? 2p 1p 1d 2d how many subshells are…

Explanation:

Step1: Recall subshell naming rules

The principal quantum number (n) gives the shell number and the angular - momentum quantum number (l) determines the subshell type. When (l = 0), the subshell is (s); when (l=1), the subshell is (p); when (l = 2), the subshell is (d); when (l=3), the subshell is (f). The subshell is named as (n) followed by the letter corresponding to (l).

Step2: Identify the subshell for (n = 2) and (l = 1)

For (n = 2) and (l = 1), the subshell is (2p) since (n=2) and (l = 1) corresponds to (p) - type subshell.

Step3: Determine number of subshells in (n = 4) shell

The number of possible values of (l) for a given (n) is (n). For (n = 4), (l) can take values (l=0,1,2,3). Each value of (l) corresponds to a different subshell ((s), (p), (d), (f) respectively). So there are 4 subshells.

Answer:

The correct representation for the subshell with (n = 2) and (l = 1) is (2p). The number of subshells in the (n = 4) shell is 4.