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प्रश्न
Right or wrong sentence.
The number of shells decreases in a group from top to bottom.
विकल्प
Right
Wrong
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उत्तर
The given sentence is wrong.
Explanation:
As one goes down a group in the periodic table, the number of electron shells increases because each successive element occupies the next higher principal energy level (period), so atoms lower in the group have more shells (e.g., Li vs Na).
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संबंधित प्रश्न
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