Neptunium (np):
a. 1s22s22p63s1
b. 1s22s22p63523pº4s23d6
c. 1522s22p63523pⓡ4523d104p5
d. 1s22s22p63523p64523d 104p65s24d105p6652
e. 1s22s22p 3s23pⓡ4s23d104p65s24d 105p6s24f145d106p67s2515

i believe it is d. 1s22s22p63523p64523d 104p65s24d105p6652

Explanation:

use the scientific table thou to make sure and or use google either one i am not sure but hope i helped.

vanderwaal's forces of attraction are the electrostatic intermolecular forces that exist in a molecule due to the temporary or permanent dipoles that are developed in a molecule. in , the major intermolecular forces are dipole-dipole interactions as the molecule is polar (bent structure). so the vanderwaal's forces of interaction in between molecules are the permanent dipole-dipole interactions that develop due to the dipole that exists in between the polar h - s bond. the positively charged hydrogen atom is attracted towards the negative end of the dipole that is sulfur of the adjacent molecule. therefore, these forces of attraction are relatively stronger than that of london dispersion forces that exist in non polar molecules.