Chemistry - Unit 2

Atomic Radius

distance from nucleus of an atom to the outermost electron

Ionization Energy

The energy needed to remove an electron

Electronegativity

The tendency to attract an electron

1

mono

2

di

3

tri

4

tetra

5

penta

6

hexa

7

hepta

8

octa

9

nona

10

deca

polar molecule

asymmetrical, have either unshared electrons on the center atom or different elements around center atom

nonpolar molecule

symmetrical, no unshared electrons on the center atom and same elements around the center atom

cation

elements that give up electrons, become more positive

anion

elements that gain more electrons, become more negative

Polar Molecule

• Asymmetrical

• Have either unshared electrons on the center atom or different elements around center atom

Nonpolar Molecule

• Symmetrical

• No unshared electrons on the center atom and same elements around the center atom

Polar Covalent Bond

• Electrons Shared Unequally

• Usually Two Different Nonmetals

Nonpolar Covalent Bond

• Electrons Shared Equally

• Usually Both Are Same Nonmetals

London Dispersion

only in two non polar molecules, weakest IMF

Dipole Dipole

attractions that exists between 2 molecules that are polar, neg + positive attracted to each other

Hydrogen Bonding

strongest form of IMF, attraction exist between Hydrogen and another ;-;