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词汇 s-block
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Examples of s-block


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This s-block organometallic compound adopts an oligomeric structure both in solution and in the solid state.
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The first two, sodium and magnesium, are members of the s-block of the periodic table, while the others are members of the p-block.
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Main group elements include elements (except hydrogen) in groups 1 and 2 (s-block), and groups 13 to 18 (p-block).
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This group lies in the s-block of the periodic table as all alkaline earth metals have their outermost electron in an s-orbital.
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The s-block comprises the first two groups (alkali metals and alkaline earth metals) as well as hydrogen and helium.
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Typically, the stable electron configuration is one of the noble gases for elements in the s-block and the p-block, and particular stable electron configurations for d-block and f-block elements.
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The table can also be deconstructed into four rectangular blocks: the s-block to the left, the p-block to the right, the d-block in the middle, and the f-block below that.
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Their behaviour is so different from the other s-block elements that there is considerable disagreement over where these two elements should be placed in the periodic table.
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The s-block and p-block together are usually considered as the main group elements, the d-block corresponds to the transition metals, and the f-block are the lanthanides and the actinides.
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