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Which of the following groups have seven valence electrons and are very reactive?

Column 1 alkali metals
Column 2 alkaline earth metals
Column 17 halogens
Column 18 noble gases

Respuesta :

Answer:

Column 1 alkali metals

Explanation:

I hope it's helpful for you

Answer:

Halogen .Group 17

Explanation:-

  • These are p block elements
  • The elements are F,Cl,Br,I,At
  • The common EC is

[tex]\\ \rm\longmapsto ns^{1-2}np^{5}[/tex]

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