Arsenic (As)vsHelium (He)
Arsenic (As) has a higher Electron Affinity (78 vs -48 kJ/mol), while Arsenic (As) has a higher Density (6 vs 0 g/cm³), while Arsenic (As) has a higher Atomic Mass (75 vs 4 u).
Atomic Properties
33
Atomic Number
2
75
Atomic Mass
4
4
Period
1
15
Group
18
Physical Properties
6
Density
0
N/A
Melting Point
1
N/A
Boiling Point
4
25
Molar Heat Capacity
N/A
Chemical Properties
2
Electronegativity
N/A
78
Electron Affinity
-48
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).