Download Bohr Models 1

Bohr Models 1
Name: ____________________ Blk: ___
Directions: Use the periodic table to determine the correct number of protons, neutrons, and electrons in each atom.
Write the number of P and N in the nucleus and draw a “-“ for the each electrons on each energy level. The energy
levels are: (2, 8, 18, 32, 50, 72).
1.
Sodium
P=
N=
5. Chlorine
P=
N=
2. Fluorine
P=
N=
6. Argon
P=
N=
3. Krypton
P=
N=
7. Copper
P=
N=
Write a brief explanation on how to find out the number of each:
Protons: _________________________________________________________________________________
Neutrons: ________________________________________________________________________________
Electrons: ________________________________________________________________________________
KEY: Bohr Models
Directions: Use the periodic table to determine the correct number of protons, neutrons, and electrons in each atom.
Write the number of P and N in the nucleus and draw the correct number of electrons on each energy level. The energy
levels are: (2, 8, 18, 32, 50, 72). Many times an energy level will be satisfied with eight electrons. Place a happy or sad
face next to each atoms to show its status as an atom.
2.
11
Na23
Sodium
Electrons
P = 11
N = 12
5. Chlorine
P = 17
N = 18
P=9
N = 10
2, 8, 1
17
Cl 35
9 19
F
2. Fluorine
6. Argon
Electrons
18
Electrons
P = 18
N = 22
2, 8, 7
P = 36
N = 48
2, 7
Ar 40
36
3. Krypton
7. Copper
Electrons
2, 8, 8
29
Kr 84
Electrons
2, 8, 18, 8
Cu 64
P = 29
N = 35
Electrons
2, 8, 18, 1
Protons: The Atomic Number
Neutrons: Subtract the Atomic Mass and the Atomic Number
Electrons: The Atomic Number because the number of positive charges (protons) equals the number of
negative ones (electrons).
How many elements are found naturally in the universe
92?
Name one that is not.
(>26 are not.)