1. Tardigrade
  2. Question
  3. Chemistry
  4. An element with atomic number 19 will must likely combine chemically with the element whose atomic number is

Q. An element with atomic number 19 will must likely combine chemically with the element whose atomic number is

 1649  220 Classification of Elements and Periodicity in Properties Report Error

Solution:

Ionic bonds are formed most readily between highly electronegative and highly electropositive elements. Since element with atomic number 19 is highly electropositive (alkali metal) it reacts with highly electronegative element with atomic number 17 (halogen).