In[]:=
$Version
Out[]=
14.0.0 for Microsoft Windows (64-bit) (December 13, 2023)
In[]:=
ElementData["Carbon","AtomicWeight"]
Out[]=
12.011
u
In[]:=
ElementData["Carbon","IonizationEnergies"]
Out[]=

1086.5
kJ/mol
,
2352.6
kJ/mol
,
4620.5
kJ/mol
,
6222.7
kJ/mol
,
37831.
kJ/mol
,
47277.0
kJ/mol
