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JoshEast
The valence electrons are as follows for these groups of elements:

Halogen- SEVEN  (halogens are group 7 elements that need one electron for the octet rule to be achieved)

Alkali Metals - ONE  (these are group one elements that lose a single electron to form an octet and cation)

Alkaline Earth Metals - TWO (group two elements that lose two electrons to form 2+ cations)

The halogens, alkali metals, and alkaline earth metals have 7, 1, and 2 valence electrons, respectively.

The following information regarding the valence electrons is:

  • Halogen - 7 elements that required one electron for the octet rule that could be accomplished.
  • Alkali metals - one element that lost the single electron for creating the octet and cation.
  • Alkaline Earth meals - 2 elements that lost two electrons for creating 2 + cations.

Learn more: brainly.com/question/23334479

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