Which orbital is non directional?
They are non directional because they are spherical in shape and probability of finding electrons at a particular distance from the nucleus is same in all directions.
Write the formula related to formal charge(F.C) of an atom? Give the Lewis structure of (NH4)SO4 .
The formal charge of an atom is the difference between the number of valence electrons of that atom in the free state and the number of electrons given to that element in Lewis structure.
It is given by
Ammonium sulfate