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1
Q

electronegativity

A

ability of an atom to attract electrons in a covalent bond

2
Q

electronegativity difference in a covalent bond

A

0

3
Q

electronegativity difference in a polar covalent bond

A

0- 1.8

4
Q

electronegativity difference in an ionic bond

A

greater than 1.8

5
Q

when will a bond be non- polar?

A
  • bonded atoms are the same

- bonded atoms have the same or similar electronegativity

6
Q

why is water a polar molecule?

A
  • 2 O-H bonds each have a permanent dipole
  • not symmetrical
  • dipoles do not cancel out
7
Q

why is carbon dioxide a non-polar molecule?

A
  • 2 C=O bonds each have a permanent dipole
  • symmetrical molecule
  • dipoles cancel out
8
Q

what are the 3 main categories of intermolecular forces?

A
  • London forces
  • permanent dipole- dipole interactions
  • hydrogen bonds