Electronegativity

Question 1

Electronegativity

Answer 1

Measure of tendency of an atom to attracts a bonding pair or e- of a covalent bond.
/ how closely an atom tends to hog the e- in a bond,
The greater the EN, the more it attracts e-.

sort of like a spectrum:
covalent ———– ionic (-> increased EN diff.)

Question 2

Affected by:

Answer 2

Atomic charge
Distance from nucleous
Electron shielding

Question 3

Permanent Dipole

Answer 3

Every atom of 2 atoms have the different charges => polar covalent bonds => non-
symmetrical molecule => a polar molecule

occurs when two atoms in a molecule have substantially different electronegativity : One atom attracts electrons more than another, becoming more negative, while the other atom becomes more positive. A molecule with a permanent dipole moment is called a polar molecule.

Question 4

Polar molecule

Answer 4

a molecule that is differently charged in different regions => polar covalent bonds

Question 5

Polar covalent bond

Answer 5

A bond between atoms where the e- are not shared equally (spend more time at one atom)