Atoms Posters
All atoms contain equal number of1.Protons2.Electrons
NEUTRON: Slightly bigger than proton…no charge…all same size
PROTON : 2000 time larger than an electron… positively charged…found in nucleus with neutron
ELECTRON :Found in cloud outside of nucleus… smallest particle…negatively charged
Ions=
Atomic Charge
Atomic Number(Number of protons and electrons)
Atomic SymbolAtomic Symbol
Isotopes: If an element has an extra NEUTRON it is called an Isotope. Ex… Lithium-7 has 3 P+ but 4 Neutrons
Periodic Table
Atomic Number(Number of protons and electrons)
Atomic NameAtomic Name
Groups: Vertical Rows Each group has the same number of outer electrons
Groups: Vertical Rows Each group has the same number of outer electrons
Periods: Horizontal rows# of protons increases fromLeft to right along rows
Periods: Horizontal rows# of protons increases fromLeft to right along rows
Isotopes: If an element has an extra NEUTRON it is called an Isotope. Ex… Lithium-8 has 3 P+ but 5 Neutrons
Element Atomic Number
# of Protons
# of Electrons # of neutrons Atomic Mass Group # Period # Outer e-’s
Hydrogen 1 1 1 0 1 1 1 1
Helium 2 2 2 2 4 18 1 2
Lithium
Beryllium
Boron
Carbon
Element Atomic Number
# of Protons
# of Electrons
# of neutrons
Atomic Mass Group #
Period # Outer e-’s
Hydrogen 1 1 1 0 1 1 1 1
Helium
Lithium
Beryllium
Boron
Carbon
Element Atomic Number
# of Protons
# of Electrons
# of neutrons
Atomic Mass Group #
Period # Outer e-’s
Hydrogen 1 1 1 0 1 1 1 1
Helium
Lithium
Beryllium
Boron
Carbon
Element Atomic Number
# of Protons
# of Electrons
# of neutrons
Atomic Mass Group #
Period # Outer e-’s
Hydrogen 1 1 1 0 1 1 1 1
Helium
Lithium
Beryllium
Boron
Carbon
Element Atomic Number
# of Protons
# of Electrons
# of neutrons
Atomic Mass Group #
Period # Outer e-’s
Hydrogen 1 1 1 0 1 1 1 1
Helium
Lithium
Beryllium
Boron
Carbon