Answer:
1- ions
Explanation:
Non-metals in group 17 on the periodic table most commonly forms -1 ions with other chemical species.
This is because of their atomic structure
Group 17 is made up of halogens which are fluorine, chlorine, bromine, iodine and astatine.
Because each of the elements has seven electrons in the outer shells of their atoms which implies that they lack one electron to become an octet, the elements are all univalent and also acceptors of electrons.
