He saw that if you take the atomic mass of chlorine, 2 add it to the atomic mass of iodine, divide by two, you get something that is really close to the atomic mass of bromine.
2
例如在元素周期表中，碲排在碘之前，尽管它的原子质量略大一些。
For example, tellurium comes before iodine in the periodic table, even though its atomic mass is slightly greater.
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