Question

An electron has principal quantum number 2. The number of sub shell and orbitals would be??

Answer 1

since the principle quantum no. is 2 hence it's subshells would be 2x = 2×2=4

Answer 2

no. of subshell is L =n+1
=2+1 = 3
no. of orbital is –L to +L
–3 to +3
=7
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