Unit 2- Intermediate bonding and polarity

Question 1

Define electronegativity

Answer 1

A measure of the pull of shared pairs of electrons in a covalent bond

Question 2

Define polar covalent bonds

Answer 2

Bonds between atoms of different elements

Question 3

Define polar molecules

Answer 3

Polar bonds which do not cancel eachother therefore leaving the whole molecule to be polar

Question 4

What is a spectrum of bonding?

Answer 4

A spectrum where the ends are purely ionic and purely covalent. Arises due to the electronegativity of atoms in a bond

Question 5

What type of bonding do two atoms with the same electronegativity have?

Answer 5

Purely covalent e.g. diatomic molecules

Question 6

What does the electronegativity have to be like for an ionic bond?

Answer 6

Large difference between the atoms in the bond

Question 7

What does a greater difference mean in electronegativity?

Answer 7

The more polar a bond is

Question 8

When does ionic bonding occur?

Answer 8

When the electronegativity is large enough to remove the electron from the bonded atom