Alkaline Earth Metals
Be, Mg, Ca, Sr, Ba, Ra
Elements in Mendeleev's periodic table were arranged according to their
atomic mass
Which property is generally characteristic of metallic elements?
high heat/electrical conductivity
Halogens
Cl, F, Br, I, At
Mendeleev
arranged periodic table according to increasing atomic mass
Mosley
arranged periodic table according to increasing atomic number
Alkali Metals
Li, Na, K, Rb, Cs, Fr
Group 1
Alkali Metals
Group 2
Alkaline Earth Metals
Groups 3-12
Transition Metals
Group 17
Halogens
Group 18
Noble Gases
noble gases
He, Ne, Ar, Kr, Xe, Rn
Compared to the alkali metals, the alkaline-earth metals
are less reactive.
Semiconductors
elements that can partially conduct electricity
Periods
Horizontal rows on the periodic table
groups/families
Vertical columns on the periodic table