Question: why 2d and 3f orbital does not exist?
Answer: In the first shell, there is only the 1s orbital, as this shell can have a maximum of only 2 electrons. Therefore, the 1p orbital doesn't exist. In the second shell, both 2s and 2porbitals exist, as it can have a maximum of 8 electrons. ... Therefore, the 3f orbitals donot exist.