Bond Polarity
- Created by: emma.davison
- Created on: 05-11-18 11:04
View mindmap
- Bond Polarity
- Electro-negativity
- Power of an atom to attract a pair of electrons in a covalent bond
- Number of electron shells
- More electron shells so bonding electrons more shielded
- Decreased
- Atomic Radius
- Increase
- Smaller atomic radious = nucleus closer to BP
- Nuclear Charge
- More protons in nucleus so stronger attraction to bonding pair
- Increaed
- Trends
- Down a group - decreasing
- Electron shells increase, and atom gets larger
- Across a period - increasing
- Increasing nuclear charge and decrease in atom size
- Down a group - decreasing
- Polar Covalent Bond
- Polarity = unequal sharing of electrons in bond
- NON-POLAR BOND
- Two atoms of same electro-negativity
- Electrons shared equally
- eg) Cl-Cl
- POLAR BOND
- Two atoms of different electro-negativity
- Electrons not shared equally - closer to most electro-negative
- eg) HCl
- Electro-negativity
Comments
No comments have yet been made