electronegativity and polarity

Question 1

what is electronegativity

Answer 1

the attraction of a bonded atom to a shared pair of e-

Question 2

which 3 factors effect electonegaitivty

Answer 2

nuclear charge
atomic radius
e- sheilding

Question 3

what happens if the gap ion electronegativity is huge

Answer 3

one atom will attract the shared pair of e- so much that it has control of them. This means that the bond becomes ionic

Question 4

when will a bond be non polar

Answer 4

All bonded atoms are the same
the bonded atoms have similar electronegativity
the molecule is symmetrical

Question 5

when will a bond be polar

Answer 5

when an electron pair is shared unequally between 2 elements.
this could be due to a lack of symmetry or a difference in electronegativity between the different elements

Question 6

what type of binding do polar molecules partake in

Answer 6

of they contain Hydrogen and (Oxygen Nitrogen or Fluorine)
hydrogen bonding
otherwise they contain a permentant dipole and therefore have permentant dipole dipole interactions

Question 7

what are London forces

Answer 7

weak intermolecular forces that exist between all molecules. They act because of the changing dipole generated by moving e- in all elements. At any instant the dipole exists but its position is constantly changing. As these elements are close to each other they induce the dipoles in eachother to line up

Question 8

what are pemenant dipole interactions

Answer 8

the electrostatic attraction between the dipoles that are induced by the difference in electronegativity between two elements

Question 9

what is hydrogen bonding

Answer 9

a special type of permentant dipole that exists between Hydrogen and (flurine, oxygen or nitrogen)