Bond Polarity Flashcards
What is electronegativity?
Atom’s ability to attract electron pair in covalent bond
Most electronegative element
Fluorine
Why is covalent bond between two atoms of same element non-polar?
Equal electronegativities, so electrons equally attracted to both nuclei
What makes a bond polar?
In covalent bond between 2 atoms of different electronegativities, bonding electrons pulled towards more electronegative atom
What is a dipole & how is it caused?
Difference in charge between 2 atoms caused by shift in electron density in bond
What causes permanent dipole?
Difference in electronegativity between 2 atoms in polar bond
Is water non-polar or polar?
Polar
What are intermolecular forces?
Very weak forces between molecules
What is ice?
Open lattice of H2O molecules
Why is the density of ice lower than water?
Hydrogen bonds hold the water molecules apart
