2.7-2.8

# 2.7-2.8 - How many 5g orbitals are there 1 2 3 4 5 5 4 7 9...

This preview shows pages 1–3. Sign up to view the full content.

1 How many 5g orbitals are there? 1. 5 2. 4 3. 7 4. 9 5. This is a trick – there are no 5g orbitals Section 2.7 Rules for Orbital Occupation by Electrons: 1) Given a choice, an e - will choose the lowest energy orbital. (Mother nature seeks the lowest energy state.) 2) No two e - can have the same 4 QN. The Pauli Exclusion Principle (Two objects can’t occupy the same space.) 3) The e - s in a half-filled suborbital all have the same spin. Hund’s Rule (At the same energy sublevel, e- ’s like to spread out and have the same spin. It’s the lowest energy state.) Section 2.7 Names for Atomic States: Ground State all e- ’s at the lowest energy. e- ’s in the same sublevel spread out as much as possible. Unpaired e- ’s pointing the same direction. Section 2.7 Excited State An e- with an empty slot below it OR unpaired e’s pointing in different directions. Not Allowed – Two e’s in the same box pointing the same direction. E 1 s 2 s 2 p 3 s 3 p + + + + + + + + E 1 s 2 s 2 p 3 s 3 p + + + + + + + Section 2.7 EXCITED STATE + Oxygen - 8 protons 8 electrons NOT ALLOWED E 1 s 2 s 2 p 3 s 3 p + + + + + + + Quantum # n l m l m s Section 2.7 2 1 0 Quantum # n l m l m s 2 1 0 +

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 E 1 s 2 s 2 p 3 p + + + + + + + 3 s + E 1 s 2 s 2 p 3 s 3 p + + + + + + + Section 2.7 GROUND STATE Electron configuration: 1s 2 2s 2 2p 4 + Enter question text. .. E 1. Ground 2. Excited 3. Not allowed Name the state: Enter question text. .. 1. Ground
This is the end of the preview. Sign up to access the rest of the document.

## This note was uploaded on 03/30/2010 for the course CH 101 taught by Professor Bigham during the Fall '08 term at N.C. State.

### Page1 / 6

2.7-2.8 - How many 5g orbitals are there 1 2 3 4 5 5 4 7 9...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online