Electronegativity content from Wikipedia
→Atomic radius decreases→Ionization energy increases→Electronegativity increases→(^333)
(^34) Na0.93
(^35) Mg1.31
(^36) Al1.61
(^37) Si1.90
(^38) P2.19
(^39) S2.58
(^40) Cl3.16
(^41) Ar
442
K^43 0.82
Ca^44 1.00
Sc^45 1.36
Ti^46 1.54
V^47 1.63
Cr^48 1.66
Mn^49 1.55
Fe^50 1.83
Co^51 1.88
Ni^52 1.91
Cu^53 1.90
Zn^54 1.65
Ga^55 1.81
Ge^56 2.01
As^57 2.18
Se^58 2.55
Br^59 2.96
Kr^60 3.00
33
https://en.wikipedia.org/wiki/Period%203%20element
34
https://en.wikipedia.org/wiki/Sodium
35
https://en.wikipedia.org/wiki/Magnesium
36
https://en.wikipedia.org/wiki/Aluminium
37
https://en.wikipedia.org/wiki/Silicon
38
https://en.wikipedia.org/wiki/Phosphorus
39
https://en.wikipedia.org/wiki/Sulfur
40
https://en.wikipedia.org/wiki/Chlorine
41
https://en.wikipedia.org/wiki/Argon
42
https://en.wikipedia.org/wiki/Period%204%20element
43
https://en.wikipedia.org/wiki/Potassium
44
https://en.wikipedia.org/wiki/Calcium
45
https://en.wikipedia.org/wiki/Scandium
46
https://en.wikipedia.org/wiki/Titanium
47
https://en.wikipedia.org/wiki/Vanadium
48
https://en.wikipedia.org/wiki/Chromium
49
https://en.wikipedia.org/wiki/Manganese
50
https://en.wikipedia.org/wiki/Iron
51
https://en.wikipedia.org/wiki/Cobalt
52
https://en.wikipedia.org/wiki/Nickel
53
https://en.wikipedia.org/wiki/Copper
54
https://en.wikipedia.org/wiki/Zinc
55
https://en.wikipedia.org/wiki/Gallium
56
https://en.wikipedia.org/wiki/Germanium
57
https://en.wikipedia.org/wiki/Arsenic
58
https://en.wikipedia.org/wiki/Selenium
59
https://en.wikipedia.org/wiki/Bromine
60
https://en.wikipedia.org/wiki/Krypton