MOLAR MASS OF CARBON MONIXIDE

(CO)

O

H     H

O  O

LEWIS DOT FOR NITROGEN MOLECULE

(N₂)

N   N

Br₂, I₂, N₂, Cl₂, H₂, O₂, F₂

ELEMENT WITH SAME ATOMIC NUMBER

BUT DIFFERENT ATOMIC MASS

OR

ELEMENT WITH SAME NUMBER OF PROTONS

BUT DIFFERENT NUMBER OF NEUTRONS

4

-C-

CARBON

C-C, C=C, C≡C

1s²,2s²,2p⁶,3s²,3p⁶

,4s²,3d¹⁰,4p⁶

ATOMIC MASS - ATOMIC NUMBER

HEAVIEST PART OF THE ATOM

OR DENSE PART OF THE ATOM

STOP WITH PAPER, SKIN.

₂ He⁴

α

MULTIPLY BY MOLAR MASS

MM

1 mol

DIVIDE BY MM

1mol

MM

MULTIPLY BY 6.02X10²³

6.02X10²³ atoms

1 mol

DIVIDE BY 6.02X10²³

1 mol

6.02x10²³

6.02X10²³

MM

MM

6.02X10²³

^-1 e ₀

β

CH₃COOH

C₂H₄O₂

CH₃COO ^-1

OR

C₂H₃O₂ ^-1

ORBITALS

AND THE MAXIMUM NUMBER OF ELECTRON PER ORBITAL

MOST OF THE ELEMENTS ON THE PERIODIC TABLE.

GIVE ELECTRONS.

CONDUCT ELECTRICITY

MOST OF THEM ARE SOLIDS

RIGHT SIDE OF THE PERIODIC TABLE

DO NOT CONDUCT ELECTRICITY

MOST OF THE GASES

ELEMENTS LOCATED BETWEEN THE METALS AND NON-METALS

SEMI-METALS

SEMI CONDUCTORS OF ELECTRICITY

ATOMIC SIZE

IONIC SIZE

ATOMIC RADIUS

IONIC RADIUS

DECREASES FROM LEFT TO RIGHT

INCREASES FROM TOP TO BOTTOM

INCREASES FROM LEFT TO RIGHT

DECREASES FROM TOP TO BOTTOM

NOBLE GASES ARE INCLUDED

INCREASES FROM LEFT TO RIGHT

DECREASES FROM TOP TO BOTTOM

NOBLE GASES ARE NOT INCLUDED

ALWAYS USE ROMAN NUMERALS

EX.

Fe ²⁺ iron (II)

Fe ³⁺ iron (III)

He

Ne