Write the formula of oxides of the following elements using Mendeleev periodic table. K, C, Al, Si
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potassium (k)is the metal of group 1A,its valency is 1.So that why the formula of its oxide is K20.
Carbon (C) is the element of group 4A.its valency is 4 and the formula of its oxide is CO2.
Aluminium (AL)is the element of group 3A.its valency is 3.so the formula of its oxide is AL2O3
Silicon (Si)is the element of group 4A.its valency is 4A.So that the formula of its oxide is SiO2
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