Cobalt (Co)vsPlatinum (Pt)
Platinum (Pt) has a higher Atomic Mass (195 vs 59 u), while Platinum (Pt) has a higher Electron Affinity (205 vs 64 kJ/mol), while Platinum (Pt) has a higher Atomic Number (78 vs 27).
Atomic Properties
27
Atomic Number
78
59
Atomic Mass
195
4
Period
6
9
Group
10
Physical Properties
9
Density
21
1,768
Melting Point
2,041
3,200
Boiling Point
4,098
25
Molar Heat Capacity
26
Chemical Properties
2
Electronegativity
2
64
Electron Affinity
205
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Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).