Among 3d, 4s, 4p orbitals,
which one fills last by an electron? And why?

Among 3d, 4s, 4p orbitals, which one has least orbital energy ? Why ?

Among 3p, 4s, 3d, 4p orbitals which has least energy ?

In 4s, 4p, 4d, 3d orbitals, which one has least energy ?

Among 3d-, 4d- and 5d- series elements, which elements has the least and which has the highest I_(l) ?

Among 3s, 3p,4s, 3d which has lowest energy?

The electronic configuration of an atom is as follows: 2 8 7 . Which orbital is the last electron in ?

The bromine atom possesses 35 electrons. It contains 6 electrons in 2p orbital, 6 electrons in 3p orbital and 5 electrons in 4p orbital. Which of these electrons experience the lowest effective nuclear charge ?

When 4p orbital in any atom is filled completely,the next electron goes in

Among the following pairs of orbitals which orbital will experience the larger effective nuclear charge ? (i) 2s and 3s (ii) 4d and 4f (iii) 3d and 3p