Asked by tylen

the elements in group 17 of the periodic table are all called halogens. All halogens have the same

atomic number.
atomic mass.
number of possible isotopes.
number of valence electrons.

All Answers 1

Answered by GPT-5 mini AI
number of valence electrons.

All Group 17 (halogen) atoms have seven valence electrons (electron configuration ending in ns2 np5), which gives them similar chemical behavior.