What is this Element?
Bohr Model Rules
Structure of the Atom
Solve the Bohr Model
Identify the Atomic Number and Weight
100
Au
Gold
100
What does the Bohr Model show?
the number of protons and neutrons in the nucleus and the number of electrons in the shells
100
What are the two structures we discussed yesterday?
the nucleus and electron cloud
100
Draw the Bohr model for aluminium (Al)
The answer will have 3 shells and 13 electrons
1st shell - 2 electrons
2nd shell - 8 electrons
3rd shell - 3 electrons
100
Titanium (Ti)
Atomic number - 22
Atomic weight - 48
200
Ne
Neon
200
In a neutral atom, the number of electrons equal the number of ...
protons
200
What does the nucleus contain?
protons and neutrons
200
Draw a Bohr Model for Fluorine (F)
Look for 9 electrons
1st shell - 2 electrons
2nd shell - 7 electrons
200
Platinum (Pt)
Atomic number - 78
Atomic weight - 195
300
Al
Aluminium
300
How many electrons do each shell hold?
1st shell - 2 electrons
2nd shell - 8 electrons
3rd shell - 8 electrons
300
What does the electron cloud contain?
electrons
300
Draw a Bohr model for Magnesium (Mg)
Look for 12 electrons
1st shell - 2 electrons
2nd shell - 8 electrons
3rd shell - 2 electrons
300
Zinc (Zn)
Atomic number - 30
Atomic weight - 65
400
Mg
Magnesium
400
How do you find the number of protons?
By looking at the atomic number
400
What is the role of protons?
determine the identity of an element
400
Argon
400
Lead (Pb)
atomic number - 82
atomic weight - 207
500
I
Iodine
500
Find the number of neutrons for Silver (Ag)
61
500
Where is the nucleus located?
in the center of the atom
500
Oxygen
500
Tin (Sn)
atomic number - 50
atomic weight - 119