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Alkali metals with water to produce metal hydroxide solution and hydrogen gas This page looks at the reactions of the Group 1 elements - lithium, sodium, potassium, rubidium and caesium - with water. The resulting solution is basic because of the …. It uses these reactions to explore the trend in reactivity in Group 1 The usual dose is 1 to 3 mg IV, what is the order of reactivity of lithium sodium and potassium given at a rate no faster than 1 mg/minute The reactivity of the alkali metals increases down the group. In each case, a solution of the. SAVE CANCEL. If it is uphill to transfer an electron from hydrogen to lithium cation, it must be downhill to transfer an electron from a lithium atom to a …. 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