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lmmentel / mendeleev

A python package for accessing various properties of elements, ions and isotopes in the periodic table of elements.
https://mendeleev.readthedocs.io
MIT License
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Oxygen has no atomic radius #9

Closed DavidChipman closed 4 years ago

DavidChipman commented 5 years ago

I just noticed that the value for Oxygen's atomic radius comes back as "None". This can't be true. It should be about 66 pm, shouldn't it? Got that number from Wikipedia, but "None" makes no sense.

lmmentel commented 5 years ago

Hi @DavidChipman,

Thanks for reporting this! I checked this and indeed the atomic_radius for oxygen returns None which means that the corresponding value is missing from the mendeleev's database. I'll try to fix that.

I would recommend you to try atomic_radius_rahm instead if that fits your application or try one of the covalent or van der Waals radii described in the docs.