Question

use mendeleevs periodic table to predict the formulae for the oxides of Sodium​

Answer 1

Answer:

Na+....................

Explanation:

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Answer 2

Answer:

The element K is in I group of Mendeleev's periodic table in which general formula is R2O. So formula of oxide of K is K2O. 2.element C is in group IV of Mendeleev's periodic table .General formula of oxide is R2O so formula of oxide is CO2. 3. Similarly oxide of Al is Al2O3

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