Period Tables and Trends

• Elements close together on the periodic table display similar characteristics.
• There are 7 important periodic trends.

1. Reactivity
2. Ion charge
3. Melting point
4. Atomic radius
5. Ionization energy
6. Electronegativity
7. Density*

Reactivity


-Metals and non-metals show different trends.
-The most reactive metal is Francium and the most non reactive element is Flourine.



Ion Charge

-Elements ion charges depend on their group(columns)






Melting points

-Elements in the center of the table have the highest melting point.
-Noble gases have the lowest melting point; starting from left to right melting point increases. (until middle of the table.



Atomic Radius
-Atomic radius decreases to the up and the right.
-Helium has the smallest atomic radius.
-Francium has the largest atomic radius.



Ionization energy
- The energy needed to completely remove aan electron from and atom.
- It increases going up and to the right.
- All Noble gases have high ionization energy.
- Helium has the highest ionization energy.
- Francium has the lowest ionization energy.
- Opposite trend of Atomic Radius.



Electronegativity

- Electronegativity is how much atoms want to gain electrons.
- Same trend as ionization energy.



- Ben Suratos