the number of elements in the sell of alkali metals is ....... .
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Explanation:
The number of 'electrons' in the 'outermost shell' of alkali metals is 1. These 'alkali metals' are very reactive in nature. They do not occur freely. All these characteristics and experiments show that only 1 electron found in the outermost shell of alkali metals.
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Answer:
1 .......................in outer shell
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