Modern Periodic Table

1. Metallic character

1.1. Increases top to bottom Decreases left to right

1.1.1. Metals are mostly present at right and middle part of the periodic table.

2. Non metallic character

2.1. Increases Left to Right Decreases Top to Bottom

2.1.1. Non metals are present at left part of periodic table.

3. Atomic Radius

3.1. Increases Top to Bottom Decreases Left to Right

3.1.1. More the electrons get added up less will be the atomic Radius. More the she'll get added more will be the atomic Radius.

4. Ionic Radius

4.1. Increases Top to Bottom Decreases Left to Right

4.1.1. Same as atomic Radius.

5. Ionization Enthalpy

5.1. Decreases Top to Bottom Increases Left to Right

5.1.1. The tendency of an element to lose electron is given by its ionization Enthalpy. Occurs because of the screening or shielding effect of nucleus.

6. Electron Gain Enthalpy

6.1. Decreases Top to Bottom Increases Left to Right

6.1.1. When an electron is added to a neutral gaseous atom to convert it into negative ion the energy required is known as electron Gain Enthalpy.

7. Electronegativity

7.1. Decreases Top to Right Increases Left to Right

7.1.1. The tendency to except electrons is known as electronegativity.