Trends on the Periodic Table

There are many different trends on the periodic table. Here is a list of the different trends:

1. Metallic Properties
2. Atomic Radius
3. Ionization Energy
4. Electronegativity
5. Reactivity 
6. Ion charge
7. Melting/Pointing Point
8. Density

Metallic Properties

- Metallic to non metallic = left to right

- Elements = more metallic going down a family in the periodic table

Atomic Radius

- Decreases going across a row left to right

- Increases going down a group

- Going left to right = atomic number, protons, and positive charge increases

- Increases in the number of electrons surrounding the nucleus

- All electrons have same average distance from the nucleus

- More protons = less distance between the electrons and the nucleus

General Trend

- Atomic size decreases left to right

- Increases down a column

Reactivity

- Most reactive metal = Francium

- Most reactive non metal = Fluorine

Ion Charge

- Depends on their group/column

Melting Point/Boiling Point

- Highest = The centre of the table

- Noble gases =  Lowest

- Left to right = increase (until the middle of the table)

Ionization Energy

- Needed to completely remove electrons from atoms

- Increases going up and to the right

- Noble gases have high ionization energy

- Helium has the highest IE

- Decreases going down

Electronegativity

- How much an atom wants to gain electrons

- Same trend as Ionization Energy

- High electronegativity attracts neighbouring atoms' electrons and might remove them completely

- High electronegativity = high ionization energy

- Fluorine is the most electronegative element