Structure 2.2.5 - Bond polarity

Question 1

What results in bond polarity

Answer 1

results from diffrences in electronegativity values between atoms in a covalent bond

Question 2

what is the electronegativity diffrence between atoms in a true non polar bond

Answer 2

exactly 0

Question 3

under what situation is the bond considered polar even if the electronegativity difffrence is 0

Answer 3

when the molecules central atom has a lone pair of electrons, this is bc the electrons create a region of negativity that polorizes the bond

Question 4

what does an electronegativity (diffrence) value greater than 0 indicate

Answer 4

a diffrence in the distribuition of electrons b/w 2 atoms

Question 5

What if a substance has a high electronegativity diffrence value and has the strenght of an ionic bond, but dosent contain a metal in the formula

Answer 5

It can only be classified as ionic if there is a metal (or cation) in the formula

Question 6

What do we have to draw if we have a molecule that has bonds w a electronegativity diffrence greater than 0

Answer 6

dipoles

Question 7

how to demonstrate a dipole

Answer 7

1. draw s- over the atom with the greater electronegativity value and s+ over the atom with the lesser electronegativity value
2. use vectors to indicate the direction of electron attraction-from the lesser toward the greater EN