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प्रश्न
Find the odd one out and give its explanation.
पर्याय
Beryllium
Helium
Neon
Argon
MCQ
गटात न बसणारा शब्द ओळखा
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उत्तर
Beryllium.
Explanation:
Helium, neon, and argon are all noble gases belonging to Group 18 of the periodic table, characterised by their stable, completely filled valence electron shells. Beryllium, however, belongs to Group 2, which are the alkaline earth metals, making it much more reactive than the inert noble gases.
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