Download Atomic Structure

SNC 1D
Atomic Structure
Basic Particles of Matter: Atoms
Proton
Electron
Neutron
Nucleus
Orbit/Shell
Empty space
Subatomic Particles:
Particles
Charge
Mass
Location
Protons
positive
1
Nucleus
Electrons
negative
1
Orbits/shells
Neutrons
neutral
1/1000
nucleus
SNC 1D
Electrons are arranged in _orbits_____ or __shells______ around the
nucleus of an atom.
Energy Levels
Maximum Amount of Electrons it Can Hold
1st
At least 2
2nd
At least 8
3rd
At least 8
4th
At least 8
Bohr Rutherford Diagram: Oxygen
8
O
8P
Oxygen
8N
16
Number of Prontons____8______
Number of Electrons___8_____
SNC 1D
Number of Neutrons_____8____
Element Information:
Atomic Number
Chemical Symbol
Chemical Name
Atomic Mass
3
Li
Lithium
7
1. The ____Atomic Number_____________ of an atom = number
of Protons in the nucleus.
2.
The __Atomic Mass_______ of an atom = number of Protons +
Neutrons in the nucleus.
3.
The number of Protons = Number of Electrons.
4.
Electrons orbit the nucleus in ___shells__________.
5.
Each shell can only carry a ____set___ number of electrons.