Question

An element X belongs to the 3rd period and group 17 of the periodic table .a, the number of valence electrons . b, is it a metal or non metal c, name the element d, formula of its compound with sodium

Answer 1

a ) The no.of valance electrons are 7..

b ) Non metal...

c ) Chlorine is the element...

d ) The compound formed when it react with sodium is NaCl..

Na + Cl ------> NaCl...

Hope you helped by it..

Please mark it as brainliest answer if belpful