# Bohr Diagrams - Kyrene School District

Bohr Diagrams Rules and Directions Bohr Diagram Rules Bohr Diagrams show: The Nucleus: # Protons # Neutrons The Energy Levels or Shells: Hold Electrons Energy Levels: 1st energy level can hold 2 electrons

2nd energy level can hold 8 electrons 3rd energy level can hold 18 electrons 4th energy level can hold 32 electrons An energy level is considered full if it has 8 in it (OCTET RULE) Bohr Diagrams Find your element on the periodic table. Determine the number of electrons it is the same as the atomic number.

This is how many electrons you will draw. Bohr Diagrams Find out which period (row) your element is in. Elements in the 1st period have one energy level. Elements in the 2nd period have two energy levels, and so on.

Remember, an Energy Level is also called a shell. Bohr Diagrams 6P 6N CARBON P: N: 6 E: 6 Calculate the number of

Protons, Neutrons, and Electrons in the Carbon atom Draw a nucleus showing the number of protons and neutrons the element has. Carbon is in the 2nd period, so it has two energy levels, or shells. Draw the 2 shells around the nucleus. 6 Bohr Diagrams

6P 6N Add the electrons. Carbon has 6 electrons to place on the shells. The first shell can only hold 2 electrons, so place 2 there. The second shell can hold 8 electrons, so place the other 4 there. (6 electrons 2 electrons

= 4 electrons) Bohr Diagrams 6P 6N Check your work. You should have 6 total electrons for Carbon. Only two electrons can fit in the

1st shell. The 2nd shell can hold up to 8 electrons. Bohr Diagrams Try the following elements on your own: 6P 6N a) H b)

He c) O d) Al e) Ne f) K

Bohr Diagrams In your notes, try the following elements on your own: 1P 0N a) H 1 electron b) He c) O

d) Al e) Ne f) K Bohr Diagrams Try the following elements on your own: 2P 2N

a) H b) He - 2 electrons c) O d) Al e) Ne

f) K Bohr Diagrams Try the following elements on your own: 8P 8N a) H b) He

c) O - 8 electrons d) Al e) Ne f) K Bohr Diagrams Try the following elements on your

own: 13P 14N a) H b) He c) O d)

Al - 13 electrons e) Ne f) K Bohr Diagrams Try the following elements on your own: 10P 10N a)

H b) He c) O d) Al e) Ne - 10 electrons f)

K Bohr Diagrams Try the following elements on your own: 19P 20N a) H b) He c)

O d) Al e) Ne f) K - 19 electrons Bohr Diagrams Ions! C 4P: 6 N: 6

6P 6N E: 10 (6+4) Draw the Bohr Diagram with the above information! Bohr Diagrams Ions! In your notes, try the following elements on your own: 6P 6N a) O

b) Al c) K 23+ + Bohr Diagrams Ions! O 8P 8N 2- -10 Electrons

Bohr Diagrams Ions! Al 13P 14N 3+ -10 Electrons Bohr Diagrams Ions! K +-18 Electrons 19P 20N Bohr Diagrams - Isotopes! Carbon 14

P: 6 N: 8 (14-6) 6P 8N E: 6 Draw the Bohr Diagram with the above information! Bohr Diagrams - Isotopes! In your notes, try the following elements on your own: 6P 8N a)

Hydrogen -2 b) Helium - 6 c) Oxygen -15 d) Aluminum - 30 e) Neon -19 f)

Potassium - 42 Bohr Diagrams - Isotopes! In your notes, try the following elements on your own: Hydrogen -2 P:1 N:1 E:1 1P 1N Bohr Diagrams - Isotopes! In your notes, try the following elements on your own: Helium - 6 P:2 N:4 E:2 2P 4N

Bohr Diagrams - Isotopes! In your notes, try the following elements on your own: 8P 7N Oxygen -15 P:8 N:7 E:8 Bohr Diagrams - Isotopes! In your notes, try the following elements on your own: Aluminum - 30 P:13 N:17 E:13 13P 17N

Bohr Diagrams - Isotopes! In your notes, try the following elements on your own: Neon -19 P:10 N:9 E:10 10P 9N Bohr Diagrams - Isotopes! In your notes, try the following elements on your own: Potassium - 42 P:19 N:23 E:19 19P 23N

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