The Periodic Table

Each element is listed in according to its atomic number. left to right across each row and then row by row from top to bottom

Family or Group Period what each column is called (top to bottom) Elements in the same group have the same number of “VALENCE ELECTRONS” 18 families Period what each row is called All elements in the same period have the same number of orbits or electron shells 7 periods

Metals -positive charges (on the left), properties solid at room temp (exception mercury not solid), shiny, good conductor of electricity. Non metals -negative charges (on the right), not shiny, half not solid at room temp, not good conductors of electricity. The staircase divides the two

Alkali metals ion charge of +1, they react violently with water https://www.youtube.com/watch?v=HvVUtpdK7xw

Alkaline earth metals - the have ion charge of +2

Noble gases ion charge of zero, which makes them neutral they can not combine with any other element but they can mix. They can mix but not react. Example neon light. Example nuts and bolts, and cake if you are going to combine with something you need an ion charge. That’s why they cant combine.

Halogens -ion charge is -1, -very reactive

Metalloids starts at boron, Br, Si, Ge, As, Sb, Te, Pd, At properties of both metals and non metals

Transition metals In the middle (not a family)

Hydrogen Family of one can combine with metals or non metals The only one that can do that.

The Periodic Table Where are the following? See page 172 Atomic number INCREASING REACTIVITY Where are the following? Atomic number Period Group/Family Metals Non-metals Transition metals Metalloids Alkali metals Alkaline earth metals Halogens Noble gases See page 172 (c) McGraw Hill Ryerson 2007