How many orbitals are there in the third shell ()?
Open in App
Solution
The number of orbitals in the third shell:
In any shell,
Where = principal quantum number or shell number
In the third shell, the principal quantum number is .
Also, the third shell contains three subshells,. In which subshell has one orbital, subshell contains three orbitals, and subshell is composed of five orbitals. Therefore,
Hence, there are total 9 orbitals in the third shell.