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Explain how Mendeleev was able to predict the properties of undiscovered elements. Check all possible answers.​

Explain how Mendeleev was able to predict the properties of undiscovered elements-example-1
User Enriquev
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Answer:

He was able to predict the properties because he left gaps for undiscovered elements

Step-by-step explanation:

Mendeleev discovered there was undiscovered elements and grouped them similarly and periodically

User Vulpex
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