Ch109_LectureNotes

Electronic Configurations & Periodicity

H: 1s¹
He: 1s²
B: 1s² 2s² 2p¹
P: 1s² 2s² 2p⁶ 3s² 3p³
V: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d³

Aufbau Diagram

7s 7p

6s 6p 6d

5s 5p 5d 5f

4s 4p 4d 4f

3s 3p 3d

2s 2p

1s

Aufbau Diagram

**Periodic Table of the Elements**
	IA	IIA											IIIA	IVA	VA	VIA	VIIA	VIIIA
H																		He
2	Li	Be											B	C	N	O	F	Ne
3	Na	Mg	IIIB	IVB	VB	VI	VIIB	VIIIB			IB	IIB	Al	Si	P	S	Cl	Ar
4	K	Ca	Sc	Ti	V	Cr	Mn	Fe	Co	Ni	Cu	Zn	Ga	Ge	As	Se	Br	Kr
5	Rb	Sr	Y	Zr	Nb	Mo	Tc	Ru	Rh	Pd	Ag	Cd	In	Sn	Sb	Te	I	Xe
6	Cs	Ba	Lu	Hf	Ta	W	Re	Os	Ir	Pt	Au	Hg	Tl	Pb	Bi	Po	At	Rn
	s¹	s²	d¹	d²	d³	d⁴	d⁵	d⁶	d⁷	d⁸	d⁹	d¹⁰	p¹	p²	p³	p⁴	p⁵	p⁶

P: 1s² 2s² 2p⁶ 3s² 3p³

[Ne] = 1s² 2s² 2p⁶

P = [Ne] 3s² 3p³

V: 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d³

[Ar] = 1s² 2s² 2p⁶ 3s² 3p⁶

V = [Ar] 4s² 3d³

© R A Paselk

Last modified 30 March 2015