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प्रश्न
Group 1 (except hydrogen) elements are called alkali metals.
टिप्पणी लिखिए
उत्तर
The elements of group 1 (except hydrogen) are metals. They react with water to form solutions that change the color of a vegetable dye from red to blue. These solutions are said to be highly alkaline or basic. Hence they are called alkali metals.
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