Bug Description

I have seen this bug a few times myself: #815 (comment)

To Reproduce

This is a stochastic bug. So you may need to do this multiple times:

rm -r .hypothesis
pytest tests/test_nuclide.py

Error Message

FAILED tests/test_nuclide.py::TestNucleus::test_nucleus_init_eq_hash - AssertionError: assert Nucleus(berkelium, 285, 1) == Nucleus(berkelium, 185, 2)

Other

I think we might want to make a list of "approved" nuclides, and test only against that list.

Version

1.1.3

• Version [e.g. 0.2.5]

Additional context

Add any other context about the problem here.