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Shell: s-block |
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H He |
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Li Be . . . . . .. |
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Na Mg .. .. . . .. .. |
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K Ca .. .. . .. .. .. .. .. .. .. .. .. .. .. .. .. |
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Rb Sr . .. .. .. .. .. .. .. .. .. .. .. .. .. . .. |
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Cs Ba .. .. .. . .. .. .. .. .. .. .. .. .. .. .. .. |
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Fr Ra .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. .. |
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.. .. .. .. .. .. .. .. .. .. .. .. .. .. |
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.. .. . .. .. .. .. .. .. .. .. .. .. .. |
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The s-block consists of elements in Groups 1 and 2 plus Helium. The |
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valence electrons of these elements are in the s-shell. This |
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spherical shaped shell holds at most 2 electrons, and has an |
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azimuthal quantum number of 0. The "s" stands for "sharp". |
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1 H Hydrogen |
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2 He Helium |
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3 Li Lithium |
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4 Be Beryllium |
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11 Na Sodium |
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12 Mg Magnesium |
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19 K Potassium |
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20 Ca Calcium |
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37 Rb Rubidium |
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38 Sr Strontium |
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55 Cs Cesium |
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56 Ba Barium |
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87 Fr Francium |
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88 Ra Radium |
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All Shells |
