मराठी

The elements with atomic numbers 9, 17, 35, 53 and 85 belong to

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प्रश्न

The elements with atomic numbers 9, 17, 35, 53 and 85 belong to

पर्याय

  • alkali metals

  • alkaline earth metals

  • halogens

  • noble gases

MCQ
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उत्तर

halogens

Explanation:

The elements have 7 electrons in the valence shell.

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