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In Mendeleev's periodic table, why was …

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In Mendeleev's periodic table, why was there no mention of Nobel gases like Helium Neon and Argon?

Posted by Nitin Tiwari 5 years, 8 months ago

CBSE > Class 10 > Science

1 answers

Deepak Silaych 5 years, 8 months ago

They were not discovered at that time

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