Part 05 Using the Periodic Table for Electron

Part 05 Using the Periodic Table for Electron Configuration and Electron Dot Notation 1

Periodic Table s block I Energy Levels p block II VIII 1 Valence Electrons 2 II Usually 3 III IV V VI VII 1 2 3 d block 4 4 5 5 6 6 7 7 f block II 6 7 2

1. Electron Configuration Notation Write the ECN for hydrogen. 1 H 1 1 s 1 Number of electrons in that sublevel Sublevel 3

s block I 1 Periodic Table II p block 1 s 1 III IV V VI VII d block 2 VIII 1 2 II 3 3 4 4 5 5 6 6 7 7 II 6 7 f block 4

1. Electron Configuration Notation Write the ECN for helium. 4 He 2 1 s 2 Number of electrons in that sublevel Sublevel 5

s block I 1 Periodic Table II p block 1 s 1 x III IV V VI VII d block 2 VIII 1 s 2 1 2 II 3 3 4 4 5 5 6 6 7 7 II 6 7 6 f block

1. Electron Configuration Notation Write the ECN for lithium. 7 Li 3 1 s 2 2 s 1 Number of electrons in the sublevels Sublevels 7

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 1 p block III IV V VI VII d block VIII 1 2 II 3 3 4 4 5 5 6 6 7 7 II 6 7 f block 8

1. Electron Configuration Notation Write the ECN for beryllium. 9 Be 4 1 s 2 2 s 2 9

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 12 s 2 p block III IV V VI VII d block VIII 1 2 II 3 3 4 4 5 5 6 6 7 7 II 6 7 f block 10

1. Electron Configuration Notation Write the ECN for boron. 11 B 5 1 s 2 2 s 22 p 1 11

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 12 s 2 p block d block II VIII IV V VI VII 1 2 p 1 2 3 3 4 4 5 5 6 6 7 7 II 6 7 12 f block

1. Electron Configuration Notation Write the ECN for carbon. 12 C 6 1 s 2 2 s 22 p 2 13

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 12 s 2 p block d block II VIII IV V VI VII 1 2 p 12 p 2 2 3 3 4 4 5 5 6 6 7 7 II 6 7 14 f block

1. Electron Configuration Notation Write the ECN for nitrogen. 14 N 7 1 s 2 2 s 22 p 3 15

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 12 s 2 p block d block II VIII IV V VI VII 1 2 p 12 p 22 p 3 2 3 3 4 4 5 5 6 6 7 7 II 6 7 f block 16

1. Electron Configuration Notation Write the ECN for oxygen. 16 O 8 1 s 2 2 s 22 p 4 17

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 12 s 2 p block d block II VIII IV V VI VII 1 2 p 12 p 22 p 32 p 4 2 3 3 4 4 5 5 6 6 7 7 II 6 7 f block 18

1. Electron Configuration Notation Write the ECN for fluorine. 19 F 9 1 s 2 2 s 22 p 5 19

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 12 s 2 p block d block II VIII IV V VI VII 1 2 p 12 p 22 p 32 p 42 p 5 2 3 3 4 4 5 5 6 6 7 7 II 6 7 f block 20

1. Electron Configuration Notation Write the ECN for neon. 20 Ne 10 1 s 2 2 s 22 p 6 21

s block I Periodic Table II 1 1 s 11 s 2 2 2 s 12 s 2 p block III IV V VI VII d block VIII 1 2 p 12 p 22 p 32 p 42 p 52 p 6 2 II 3 3 4 4 5 5 6 6 7 7 II 6 7 22 f block

2. Electron Dot Notation Electron dot notation shows only the valence electrons in an atom. Each valence electron is represented by a dot. 23

2. Electron Dot Notation Write the EDN for hydrogen. H 24

2. Electron Dot Notation Write the EDN for helium. He 25

2. Electron Dot Notation Write the EDN for lithium. Li 26

2. Electron Dot Notation Write the EDN for beryllium. Be 27

2. Electron Dot Notation Write the EDN for boron. B 28

2. Electron Dot Notation Write the EDN for carbon. C 29

2. Electron Dot Notation Write the EDN for nitrogen. N 30

2. Electron Dot Notation Write the EDN for oxygen. O 31

2. Electron Dot Notation Write the EDN for fluorine. F 32

2. Electron Dot Notation Write the EDN for neon. Ne No atom in the PT has more than 8 valence electrons is a stable octet. 33

Example: Write the electron configuration notation and electron dot notation for zirconium. 91 Zr 40 1 s 2 2 s 22 p 6 3 s 23 p 6 4 s 2 3 d 10 4 p 6 2 2 4 d 5 s Zr 34

s block I Periodic Table II p block 1 III IV V VI VII d block 2 VIII 1 2 II 3 3 4 3 d 4 5 4 d Zr 5 6 5 d 6 d 6 7 7 II 6 7 35 f block

Example: Write the electron configuration notation and electron dot notation for gadolinium. 157 Gd 64 1 s 2 2 s 22 p 6 3 s 23 p 6 4 s 2 3 d 10 4 p 6 10 5 p 6 6 s 2 2 4 d 5 s 5 d 1 4 f 7 Gd 36

s block I Periodic Table II p block 1 III IV V VI VII d block 2 VIII 1 2 II 3 3 4 4 5 5 6 6 5 d 57 7 7 II 4 f 6 58 59 6061 62 63 Gd 5 f 7 f block 37

Example: Write the electron configuration notation for uranium. 238 U 92 1 s 2 2 s 22 p 6 3 s 23 p 6 4 s 2 3 d 10 4 p 6 10 2 10 6 2 5 s 4 d 5 p 6 s 5 d 4 f 14 6 p 6 7 s 2 6 d 1 5 f 3 38

Assignment p. 45 -55 s block I Periodic Table II p block 1 III IV V VI VII d block 2 VIII 1 2 II 3 3 4 3 d 4 5 4 d 5 6 5 d 6 d 6 7 7 II 4 f 6 5 f 7 39 f block