Trends on the periodic table.

Elements close to each other on the peroidic table displaysimilar characteristics.
Theres 7 trends to elements: -Reactivity
                                              -Ion Charge
                                              -Melting Point
                                              -Atomic Radius
                                              -Ionization energy
                                              -Electronegativity
                                              -Density

Reactivity
-Metals and non-metals show different trends
-Most reactive metal is Francium
-Most reactive non-metal is Fluorine

Ion charge
Elements ion charges depend on their group


Melting point
Elements in center -> highest M.P.
Noble gases -> lowest M.P.
L<R til middle

Atomic Radius
Decreases from left bottom to top right
Helium smallest
Francium largest

Ionization Energy
the energy needed to completely remove an electron from an atom
Increases from bottom left to top right
All noble gases have high I.E.
Helium highest
Francium lowest

Electronegativity
How much atoms wants to gain electrons
Same trend as Ionization energy

-Stanley K