Total number of orbitals associated with third shell is-
There are three subshells present in 3rd electron shell. These are 3s, 3p, 3d. we know, s -subshell has only one orbital p-subshell has three orbitals. d-subshell has five orbitals. So, total number of orbitals associated with 3rd shell = 1 + 3 + 5 = 9 Hence, there are nine orbitals associated with 3rd shell.
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