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प्रश्न
The number of electrons in the outermost shell of alkali metals is ______.
विकल्प
1
2
3
7
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उत्तर
The number of electrons in the outermost shell of alkali metals is 1.
Explanation:
Alkali metals belong to Group 1 of the periodic table, which includes elements like lithium, sodium, and potassium. They all have a valence electronic configuration of (ns1). Because they possess exactly one electron in their outermost shell, they easily lose it to form univalent positive ions (M+) and achieve a stable noble gas configuration.
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संबंधित प्रश्न
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Down:
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| Symbol | Atomic No | Electronic Configuration | |
| 1. | He | 2 | ______ |
| 2. | Ne | ______ | 2,8 |
| 3. | Ar | ______ | 2, 8,8 |
| 4. | Na | 11 | ______ |
