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dmitri mendeleev's periodic law states that chemical and physical properties repeat themselves in groups of ?
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dmitri mendeleev's periodic law states that chemical and physical properties repeat themselves in groups of ?

User Nikhil Pingle
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Dmitri Mendeleev's periodic law states that chemical and physical properties repeat themselves in groups of 8.
User Govinda
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Dmitri mendeleev's periodic law states that chemical and physical properties repeat themselves in groups of 8. 
User Niklas Modess
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