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Vinay Kumar

UP Board 10th Class 2021 (For Hindi Medium Students)
About UP Board Crash Course
3 years ago

what is periodicity?

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Dileep Vishwakarma

3 years ago

1. the tendency, quality, or fact of recurring at regular intervals. 2. Chemistry. the occurrence of similar properties in elements occupying similar positions in the periodic table.

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Sumit Pandey

3 years ago

right

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