हिंदी

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

विकल्प

  • alkali metals

  • alkaline earth metals

  • halogens

  • noble gases

MCQ

उत्तर

halogens

Explanation:

The elements have 7 electrons in the valence shell.

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