What do lithium, sodium, potassium, rubidium, and caesium have in common?

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Lithium, sodium, potassium, rubidium, and cesium are all part of a group called the alkali metals.  They are all found in group 1 of the periodic table.  That is to say that they are all located in the first vertical line on the left side of the periodic table.  They...

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Lithium, sodium, potassium, rubidium, and cesium are all part of a group called the alkali metals.  They are all found in group 1 of the periodic table.  That is to say that they are all located in the first vertical line on the left side of the periodic table.  They are all soft metals in elemental form and they all react violently with water.  They react so strongly because they all readily lose an electron to form the +1 cation very easily.  This is because they only contain one electron in their valence shells so it is easily removed to achieve a stable octet of electrons in the outermost energy shell.

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