Families
1st group in the periodic table.
Alkali Metals
Found along the zigzag line.
Metalloids
The atomic symbol is Fe
Iron
The number of valence electrons in group 17
7 valence electrons
2nd group on the periodic table.
Alkaline earth metals
Found mostly on the left side of the periodic table.
Metals
Atomic symbol is C
Carbon
Created the periodic table.
Dmitri Mendeleev
17th group on the periodic table.
Halogens
Atomic symbol is O
Oxygen
13th group on the periodic table.
Boron Family
Only non metal on the metal side of the periodic table.
Hydrogen
Atomic symbol is K
Potassium
Number of valence electrons in group 2
2 valence electrons
Group 3-12 are classified as this.
Transition metals
Only liquids on the periodic table.
Mercury and Bromine
Atomic symbol is Au
Gold
Which group doesn't have a set number for valence electrons.
Groups 3-12