Question

select the correct answer from a b c and d an element with atomic number 19 will most likely combined chemically with the element whose atomic number 17 and 18 and 20

Answer 1

atomic number 19= potassium
ans. is MAINLY CHLORINE..
EX..KCL

Answer 2

An electropositive element will combine with an electornegative element forming and Ionic bond. So it is At.No. 17