If Charles Harness gave a fractional atomic weight, I know that he knew enough -- more than enough -- to know what that implied. If Ham Sandwich did, that's a strike down.
(My favorite example is bromine, which has an atomic weight of 79.90. It's almost exactly 50/50 79-Br and 81-Br.)
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(My favorite example is bromine, which has an atomic weight of 79.90. It's almost exactly 50/50 79-Br and 81-Br.)