5. valence electrons are located on which energy level\na. innermost energy level\nb. outermost energy…

5. valence electrons are located on which energy level\na. innermost energy level\nb. outermost energy level\nc. always on the first energy level\nd. all of the above\n6. elements located on the first group are called\na. metalloids\nb. transition elements\nc. alkali metals\nd. halogens\n7. halogens belong to group 17. they are\na. electronegative\nb. electropositive\nc. neutral\nd. all of the above

5. valence electrons are located on which energy level\na. innermost energy level\nb. outermost energy level\nc. always on the first energy level\nd. all of the above\n6. elements located on the first group are called\na. metalloids\nb. transition elements\nc. alkali metals\nd. halogens\n7. halogens belong to group 17. they are\na. electronegative\nb. electropositive\nc. neutral\nd. all of the above

Answer

Brief Explanations:

  • For question 5, valence electrons are in the outermost energy level of an atom.
  • For question 6, elements in group 1 are alkali metals.
  • For question 7, halogens in group 17 are highly electronegative as they tend to gain electrons to achieve a stable - electron configuration.

Answer:

  1. B. Outermost energy level
  2. C. Alkali metals
  3. A. Electronegative