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