Question

Were the members of noble gas family known when
Mendeleev gave his periodic table ?​

Answer 1

Answer:

noope

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Answer 2

Answer:

NO

Explanation:

Hi buddy! hope you are doing well, here is your answer:

Mendeleev had left the noble gases out of his periodic table for a very good reason: they were not known, and there were no known elements with similar properties which would lead him to suspect that they existed. But he was a smart man if that's the reason why the element 101 is named after him mendelevium.

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