Question

what are halogens are they similar to non metals

Answer 1

Halogens have seven valence electrons non metals valency 1 high electron affinity low high electronegativity high ionisation potential small atomic size. No they are not like metals . Metals are reducing agents.  Halogens are oxidizing agents.  They form cations whereas halogens form anions . Metals have low ionisation potential low electron affinity low electronegativity big atomic size.
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