[zeshkani]

hi there i have question,
 since after the f orbital, the g orbital comes next,  deduce the atomic number of the first element at which g orbitals would begin to be filled, on the basis of the patterns of the d and f orbitals ?

i tired doing this, but i just could not come up, where such an element would be on the periodic table.

[Dan]

The question doesn't state that it exists, you are just after an atomic number...

[FeLiXe]

you know that nd comes after (n+1)s
and that nf after (n+2)s
so ng may come after (n+3)s