In the second energy level, the highest energy subshell is 2p. The subshells are shown by the orbital quantum numbers.
There are four sets of quantum numbers that describe an electron in an atom which are;
- Principal quantum number
- Orbital quantum number
- Magnetic quantum number
- Spin quantum number
The values of the orbital quantum number which shows the energy subshell in which an electron is found must take on values from 0 to (n - 1).
Having said that, for an atom with more than one electron, the highest energy subshell in the second energy level corresponds to l =1 which is the 2p orbital. Remember that s p d f corresponds to 0 1 2 3 .
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