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प्रश्न
Find the odd one out and give its explanation.
विकल्प
Potassium
Magnesium
Calcium
Beryllium
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उत्तर
Potassium
Explanation:
Magnesium, calcium, and beryllium all belong to Group 2 of the periodic table, collectively known as the alkaline earth metals. Potassium, however, belongs to Group 1, known as the alkali metals, which makes it much more reactive and gives it a different valency compared to the other three.
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संबंधित प्रश्न
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| Column A | Column B |
| 1) s -block | a) Lanthanides and actinides |
| 2) p -block | b) Group 3 to 12 |
| 3) d -block | c) Group 1, 2 |
| 4) f -block | d) Group 13 to 18 |
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Write the name.
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| Shell | n | 2n2 | Electron holding capacity |
| K | 2 × 12 | 2 | |
| L | 2 | 8 | |
| 3 | 2 × 32 | 18 | |
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Group - Period
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| Element | A | B | C | D |
| Electronic configuration | 2, 1 | 2, 8 | 2, 8, 1 | 2, 8, 8 |
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