Ranking By Electronegativity

Electronegativity is the ability of an atom to att\fract electrons in a chemical bond. Understanding periodic trends in electronegativity helps predict the behavior of elements during chemical reactions.

Key Concepts

• Definition: Electronegativity is measured on the Pauling scale, which ranges from 0.7 $Fr$ to 4.0 $F$.
• Trends in the Periodic Table:
  • Increases Across a Period: As you move from left to right across a period, electronegativity increases due to increasing nuclear charge.
  • Decreases Down a Group: As you move down a group, electronegativity decreases because of increasing atomic radius and electron shielding.

Ranking Electronegativity

To rank elements by electronegativity, consider:

1. Position in the Periodic Table: Use the trends mentioned above.
2. Example Calculation: For two elements A and B, if A has an electronegativity of ${chi}_A = 3.0$ and B has , then implies that A is more electronegative than B.