## The use of hidden d orbital

Wu Yuchen A1
Posts: 24
Joined: Thu Jun 29, 2017 3:00 am

### The use of hidden d orbital

Atoms including sulfur can have more than eight elections on the out most layer when bouds with atoms. This is because sulfur atom can utilize d orbital to form bonds. The question is, should all d orbitals be used up when bonded electrons are more than eight or just depends on specific situation? Can someone explain reason to me? Thanks.

Dabin Kang 1B
Posts: 22
Joined: Fri Jun 23, 2017 11:39 am
Been upvoted: 1 time

### Re: The use of hidden d orbital

In molecules like $SO_{4}^{2-}$ in which sulfur exceeds its octet, the remaining electrons would go into the d orbitals, which should be filled in the same way the s and p orbitals are filled using the Pauli exclusion principle and Hund's rule.

Akash_Kapoor_1L
Posts: 52
Joined: Thu Jul 13, 2017 3:00 am
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### Re: The use of hidden d orbital

You would use up the d orbital of the highest energy level. For example in Sulfur, since you already have electrons in the 3s and 3p orbitals, you can also fill the 3d orbital with electrons... Recall how in the last chapter we looked at quantum numbers and if n=3, l = 0,1,2; thus any atom with n=3 at the primary quantum number has the ability to utilize the d orbital.