Your periodic table, always with you.

Use it offline. Find elements quickly. Keep favorites and personal notes on iPhone and iPad.

Electronegativity Trend

Electronegativity generally increases from left to right across a period and decreases down a group. Fluorine is the most electronegative element.

Periodic Trend

Highest Values

F - Fluorine 3.98
O - Oxygen 3.44
Cl - Chlorine 3.16
N - Nitrogen 3.04
Br - Bromine 2.96

Lowest Values

Fr - Francium 0.70
Cs - Cesium 0.79
Rb - Rubidium 0.82
K - Potassium 0.82
Ba - Barium 0.89

iPhone & iPad

Your periodic table, always with you.

  • Access element data offline, in the lab or in class.
  • Find elements quickly by name, symbol, or atomic number.
  • Save favorite elements and add your own notes.
Published App Store screenshots: periodic table, element details, and search (English).