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We determine what block an element is based on its valence electrons. If an element has its valence electron in the p subshell, then it belongs to the p block. The s block contains elements in the first two columns while the p block contains elements in the last six columns.
The s-block are the elements on columns 1 and 2, the p-block are the elements on columns 13-18, and the d block are the elements on columns are 3-12. They are grouped by columns because elements in the same column has the same number of valence electrons, and blocks are determined by valence electrons.
do we need to know these blocks for the test this week? i know he said we'd only need to know information covered until friday of week 3 but i can't really remember if we went over this quickly and i just don't remember, or if we don't need to know it for this test.
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