Argon (Ar)vsSelenium (Se)
Selenium (Se) has a higher Electron Affinity (195 vs -96 kJ/mol), while Selenium (Se) has a higher Boiling Point (958 vs 87 K), while Selenium (Se) has a higher Melting Point (494 vs 84 K).
Atomic Properties
18
Atomic Number
34
40
Atomic Mass
79
3
Period
4
18
Group
16
Physical Properties
2
Density
5
84
Melting Point
494
87
Boiling Point
958
N/A
Molar Heat Capacity
25
Chemical Properties
N/A
Electronegativity
3
-96
Electron Affinity
195
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).