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Actinium (Ac)vsThallium (Tl)

Thallium (Tl) has a higher Group (13 vs 3), while Actinium (Ac) has a higher Melting Point (1,500 vs 577 K), while Actinium (Ac) has a higher Boiling Point (3,500 vs 1,746 K).

Atomic Properties

89
Atomic Number
81
227
Atomic Mass
204
7
Period
6
3
Group
13

Physical Properties

10
Density
12
1,500
Melting Point
577
3,500
Boiling Point
1,746
27
Molar Heat Capacity
26

Chemical Properties

1
Electronegativity
2
34
Electron Affinity
36

Similar Comparisons to Actinium (Ac) vs Thallium (Tl)

Data sourced from Periodic-Table-JSON (CC-BY-SA (data is public domain scientific fact)).