Arrange each set of atoms in order of decreasing ionization energy (IE1) and dec

Question

Arrange each set of atoms in order of decreasing ionization energy (IE1) and decreasing atomic radius: Cl, K, S, Ca i will rate this after looking through every response

Explanation / Answer

Cl>S>Ca>K, IE increases as you go across a period and decreases as you go down a group, however Group 2A & 5A have larger IE1 than group 3A & 6A respectively cuz of half filled p subshells, hope that makes sense! Oh sorry and atomic radius decreases as you go from left to right across a period and increases as you down a group, so the order I listed above just reverse it for atomic radius part!

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