Electrons in an atom tend to occupy shells in _______ .
Decreasing order of energies
Multiples of 2
Increasing order of energies
Random order
Electrons in an atom tend to occupy shells in increasing order of energies. K < L < M < N.
The screening effect of electron of s, p, d and f orbitals of a given shell of an atom on its outer shell electrons are in the order of: