Chapter 3- Bonding

Question 1

What is electronegativity?

Answer 1

A measure of the tendency of an atom to attract a bonded pair of electrons towards itself in a covalent bond

Question 2

What does electronegativity depend on?

Answer 2

nuclear charge
Distance from outer shell from nucleus
electron shielding

Question 3

How electronegative does a bond need to be polar

Answer 3

greater than 0.5

Question 4

What is electronegativity measured from

Answer 4

0-4.0

Question 5

How do Van der Waals forces form

Answer 5

Electrons move around in the atom l, charges randomly become concentrated in an area creating a temporary dipole which can create induced dipoles on surrounding atoms

Question 6

What can hydrogen bonding happen on

Answer 6

H to nitrogen, oxygen or fluorine with a lone pair of electrons

Question 7

What is a coordinate bond

Answer 7

A covalent bond in which both electrons in the bond come from the same atom

Question 8

What is the base shape of a molecule with 2 electron pairs

Answer 8

linear

Question 9

What is the base shape of a molecule with 3 electron pairs

Answer 9

triagonal planar

Question 10

What is the base shape of a molecule with 4 electron pairs

Answer 10

tetrahedral

Question 11

What is the name of the base shape of a molecule with 5 electron pairs

Answer 11

Triagonal bipyramid

Question 12

What is the name of the base shape of a molecule with 6 electron pairs

Answer 12

octahedral

Question 13

bond angle in trigonal planars

Answer 13

120

Question 14

Bond angle in linear bonds

Answer 14

180

Question 15

bond angle in tetrahedrals

Answer 15

109.5

Question 16

Bond angles in trigonal bipyramidal

Answer 16

120,90

Question 17

Bond angle in octahedral

Answer 17

90

Question 18

amount angle decreased by per lp

Answer 18

2.5