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Definition of alkali metal in English: alkali metalnoun Chemistry Any of the elements lithium, sodium, potassium, rubidium, caesium, and francium, occupying Group IA (1) of the periodic table. They are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides. 〔化〕碱金属 Example sentencesExamples - The first family on the periodic table is the alkali metals.
- Sodium is an alkali metal and tends to lose an electron to form the positive sodium ion (Na +).
- We've used such smart polymers to fabricate chemically sensitive holograms responsive to water, alcohol, pH, and positively charged ions of alkali metal.
- You need an alkali metal, which has one electron in the outer shell, to make the process work.
- He isolated potassium, another well known alkali metal, from potassium hydroxide in the same year.
Definition of alkali metal in US English: alkali metalnoun Chemistry Any of the elements lithium, sodium, potassium, rubidium, cesium, and francium, occupying Group IA (1) of the periodic table. They are very reactive, electropositive, monovalent metals forming strongly alkaline hydroxides. 〔化〕碱金属 Example sentencesExamples - The first family on the periodic table is the alkali metals.
- He isolated potassium, another well known alkali metal, from potassium hydroxide in the same year.
- Sodium is an alkali metal and tends to lose an electron to form the positive sodium ion (Na +).
- We've used such smart polymers to fabricate chemically sensitive holograms responsive to water, alcohol, pH, and positively charged ions of alkali metal.
- You need an alkali metal, which has one electron in the outer shell, to make the process work.
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