The Periodic Table 01 Slide 1 Electron Radial Distribution 03 p - - PowerPoint PPT Presentation

Slide 1

The Periodic Table 01

Slide 2

Electron Radial Distribution 03

• p Orbital Shapes:

http://www.shef.ac.uk/chemistry/orbitron/

Slide 3

Electron Radial Distribution 04

• d and f Orbital Shapes:

Slide 4

Shapes of Orbitals 01

Give a possible combination of n and l quantum numbers for the following third-shell orbitals:

Slide 5

Spin Quantum Number 01

• Spin Quantum Number:
• The Pauli Exclusion

Principle states that – “in an atom no two electrons can have the same four quantum numbers”.

Slide 6

Effective Nuclear Charge 02

When we have several electrons:

we say that these electrons shield the outer electrons

Slide 7

Electron Configuration of Atoms 07

He  1s2 1s Li   1s2 2s1 1s 2s Be   1s2 2s2 1s 2s B    1s2 2s2 2p1 1s 2s 2px 2py 2pz

Slide 8

Electron Configuration of Atoms 08

C     1s2 2s2 2p2 1s 2s 2px 2py 2pz N ?   1s2 2s2 2p3 1s 2s 2px 2py 2pz

Slide 9

Electron Configuration of Atoms 09

N      1s2 2s2 2p3 1s 2s 2px 2py 2pz O      1s2 2s2 2p4 1s 2s 2px 2py 2pz Ne      1s2 2s2 2p6 1s 2s 2px 2py 2pz S [Ne]     [Ne] 3s2 3p4 3s 3px 3py 3pz

Slide 10

Electron Configuration of Atoms 13

Slide 11

Electron Configuration of Atoms 14

Slide 12

Electron Configuration of Atoms 15

• Anomalous Electron Configurations: Result from

unusual stability of half-filled & full-filled subshells.

• Chromium should be [Ar] 4s2 3d4, but is [Ar] 4s1 3d5
• Copper should be [Ar] 4s2 3d9, but is [Ar] 4s1 3d10