Polarity

Trigonal planar polar or non polar

It's non-polar when it has the same atoms on the outside, but polar when it has different outside atoms

bent

104.5

Tetrahedral

109.5 degrees

trigonal planar

120 degrees

Linear

180 degrees

What is a compound?

2 or more elements chemically combined

trigonal pyramidal

3 bonds, 1 lone pair, 107 degrees

What is a polar covalent bond?

A covalent bond in which electrons are not shared equally

Electronegativity definition

A measure of the ability of an atom in a chemical compound to attract electrons

What is BrINClHOF?

Bromine, Iodine, Nitrogen, Chlorine, Hydrogen, Oxygen, Flourine

Molecule example

H2O

Compound examples

H2O, NaCl

Does electronegativity increase or decrease across a period?

Increase

What does the difference in electronegativity tells us ?

The difference in electronegativity tells about or bond between two atoms

Bent is always polar True/False

True

Do we care about polarity ?

We don't actually care about polarity but it helps us see if the molecule is polar/non-polar

Lewis Dot Structure

diagram of a molecule using dots to represent valence electrons

non polar bond difference in electronegativity

no charge and the difference between 0.0-0.4

tetrahedral, polar/nonpolar

nonpolar when has the same atoms on the outside

ionic bond

one atom pulls so hard that it rips away the electron from the other atoms and this creates ions only with non-metals and metals

Covalent bond definition

sharing of electrons

Molecule definition

two or more atoms held together by covalent bonds

octet rule

States that atoms lose, gain or share electrons in order to acquire a full set of eight valence electrons

shielding definition

That core electrons in inner shell will block the pull of the nucleus on valance electrons

Does electronegativity increase or decrease down a group?

Decrease

What can have polarity ?

Only covalent bonds can have polarity

polar bond difference in electronegativity

Partial bond with partial charges. Difference between 0.5-1.9

trigonal pyramidal polar/non-polar

Polar

Is Cl2 polar or nonpolar?

The electron charge is identical on both atoms. It is, therefore, a non-polar molecule.

What is a non-polar bond?

a covalent bond in which electrons are shared equally

Ionic bond difference in electronegativity

bigger than 1.9