The first two columns of the periodic table are labeled the s block.

Name: The first two columns of the periodic table are labeled the s block.
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The first two columns of the periodic table, which include the Group 1 alkali metals and the Group 2 alkaline earth metals, are indeed referred to as the s block. This is because the outermost electrons of the elements in these columns occupy s orbitals.

The First Two Columns of the Periodic Table Are Labeled