Groups on the Periodic Table Back of page

Groups on the Periodic Table Back of page 17 and page 18

Alkali Metals Group number – 1 Soft, tarnish rapidly, low melting point, low Properties-density, violently react, silver, conductors Lithium, sodium, potassium, rubidium, cesium, francium Examples- Reactivity- React violently, very reactive 1 Valence Electrons. Aircrafts, salt, batteries, explosives Uses-

Alkaline Metals Group number – 2 Properties. Solid Examples-Calcium, magnesium, Reactivity-Very reactive metals 2 Valence Electrons- Uses- Bones, teeth, light weight metals for bikes/airplanes

Halogens Group number – 17 Properties. Examples. Reactivity- Non metal Diatomic – Cl 2, Br 2 Helium, argon, neon, xenon, krypton Very reactive non metals Valence Electrons. Uses- 7 Used to kill bacteria/germs

Noble Gases Group number – 18 Properties. Examples. Reactivity- Gases, non metals Helium, argon, neon, xenon, krypton Not reactive Valence Electrons- 8 Uses- Balloons, lights

Transition Metals Group number – 3 -12 Properties- Great conductors, high melting point, hard Examples- Copper, silver, gold, titanium Reactivity- Less reactive than most metals Valence Electrons. Uses- Coins, jewelry 1, 2

1 e 8 e 2 e 3 e 4 e 5 e 6 e 7 e

How many electrons in the outside shell? 7 electrons Which group is this element found in? This is a Bohr model of what element? Group 17 - Halogens Which elements have things in common with this element? Iodine, Bromine, flourine