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Purrsia · Answer 1 · 2018-02-04T02:02:29+0000

Answer:

Mendeleev observed that tellurium has chemical properties like other elements in its group, and he did not know that neutrons cause the greater atomic mass.

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Dlinsin · Answer 2 · 2018-02-05T15:28:55+0000

Mendeleev observed that tellurium has chemical properties like other elements in its group, and he did not know that neutrons cause the greater atomic mass is the most likely reason.

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