Which of the following orbital is not possible

Which of the following orbitals are not possible ? 2s, 2p, 3f, 3d.

Write down the electronic configuration of ""_(14)Si and ""^(25)Mn. Which of the following orbitals are not possible 1p, 2d, 3s, 3f

a. When energy of eleçtron is to be taken to zero? b. Which of the following orbitals are not possible? Give reasons 3 s, 1 p, 4 f, 2 d

Which of the following orbits is a possible orbit for a planet?

Which of the following orbits is a possible orbit for a planet?

Which pf the following orbitals are not possible? 2d,4f,4g and 6d

Which of the following orbital are and possible ? 2d,Delta f ,4g and 6 d