Best Answer: when n = 5, the highest number for l is 4. So, according to the chart, there are s, p, d and f subshells. The first blank, therefore, is 4.
L 0 1 2 3
subshell s p d f
Since L = 2, there are s, p, and d subshells. s subshells hold 1 orbital (2 electrons), p subshells hold 3 orbitals (6 electrons) d subshells hold 5 orbitals (10 electrons) f subshells hold 7 (14 electrons). For the second blank, there are 16 orbitals total (1+3+5+7) and for the third, 32 electrons total (2+6+10+14).
Source(s):
Chemistry Minor