Electronegativity

Question 1

What is electronegativity

Answer 1

The ability of an atom to pull the share pair of electron towards itself

Question 2

What is the pattern of electronegativity?

Answer 2

As you go across and up, electronegativity increases

Question 3

What happens if one atom is more electronegative than the other?

Answer 3

If B is more electronegative than A, it can attract the bonded pair more than A, and becomes slightly negative. A is therefore slightly positive

Question 4

What is the name of a bond where ones more electronegative than the other?

Answer 4

Polar bond

Question 5

How can a molecule have polar bonds but not be polar?

Answer 5

If a molecule has polar bonds, but it is symmetrical, the positive or negative poles can cancel out and the molecule itself isn’t polar

Question 6

What do you need to consider when deciding if a molecule is polar or not?

Answer 6

Difference in electronegativity

Shape of molecule