S-block

Summary

• The s-block of the periodic table of the elements consists of the first two groups: the alkali metals and alkaline earth metals, plus hydrogen and helium. These elements are distinguished by the property that in the atomic ground state, the highest-energy electron is in an s-orbital.

Similar Topics

• D-block
• G-block
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Related Topics

• Alkaline earth
• Ground state
• Periodic table

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