What has a higher electronegativity Rb or Te? Explain (using CER)

Answer 1

If you are looking at the periodic table, eletronegativity is lowest at the lower left (Francium) and highest at the upper right, not counting the Nobel gasses (Fluorine). Electronegativity increases as you move up or right. If you find Rb and Te you will see that TE is far right of Rb, so Te has a higher electronegativity.

Answer 2

CER?

Electronegativity increases within a period going from left to right, and it increases within a group going from bottom to top, Thus, F would be the most electronegative element. Comparing Rb to Te, Te would be more electronegative as it is far to the right of Rb.

As you move left to right, the number of protons in the nucleus increases, and this attracts the electrons. The more protons, the greater the attraction and the greater the electronegativity.