Difference between revisions of "Group (Chemistry)"

Revision as of 09:24, 1 October 2018

A Group is a column on the Periodic Table with elements with the same number of electrons on the Outer Shell.

Elements have similar chemical properties when they have the same number of electrons in the Outer Shell.

The chemical properties of elements within a [[group] are similar. However, the reactivity within a group changes as you move up or down the periods.

Group 1: The Alkali Metals all react strongly with water. The reactivity increases as you go down the group.
Group 2: The Alkali Earth Metals all react strongly with steam and acids. The reactivity increases as you go down the group.
Group 7: The Halogens all act as bleaching agents and kill bacteria. The reactivity decreases as you go down the group.
Group 0: The Noble Gases are all inert (unreactive).

The physical properties of elements within a group are similar. However, the property changes gradually as you move down the group.

@@ Line 4: / Line 4: @@
 ===About Groups===
-: The [[element]]s are arranged [[group]]s of similar [[Chemical Properties]].
+: The [[element]]s are arranged [[group]]s of similar [[Chemical Property|chemical properties]].
-: [[Element]]s have similar [[Chemical Properties]] when they have the same number of [[electron]]s in the [[Outer Shell]].
+: [[Element]]s have similar [[Chemical Property|chemical properties]] when they have the same number of [[electron]]s in the [[Outer Shell]].
 {| class="wikitable"