Question

$\huge \underline \red{question}$
Use Mendeleev’s periodic table to predict the formulae for the oxides of the following elements: K, C, Al, Si, Ba.​

Answer 1

Answer:

K is in Group 1. So, the oxide will be K

2

O (potassium oxide).

Al is in Group 3. So, the oxide will be Al

2

O

3

(Aluminium oxide).

Ba is in Group 2. So, the oxide will be BaO (Barium oxide).

Answer 2

Explanation:

The element K is in I group of Mendeleev's periodic table in which general formula is R20. So formula of oxide of Kis K20

2.element C is in group IV of Mendeleev's periodic table .General formula of oxide

is R20 so formula of oxide is CO2 3. Similarly oxide of Al is Al203.

4. Formula of Si oxide is SiO2.

5. oxide of Ba is Bao