Groups - GCSE Chemistry Definition
Reviewed by: Richard Boole
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In GCSE Chemistry, the term 'Groups' refers to the columns in the periodic table of elements. Each group contains elements that have similar chemical properties because they have the same number of electrons in their outer shell. For example, Group 1 is known as the alkali metals and includes elements like lithium and sodium, which are very reactive. On the other hand, Group 8 also known as Group 0 is known as the noble gases, such as helium and neon, which are unreactive. Understanding groups helps us predict how different elements will behave in chemical reactions.
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