Question

6) Aluminium (atomic number -13 )and oxygen (atomic number- 8) are combined.Write the Chemical formula of the compound and explain the points to be remembered to write a chemical formula.​

Answer 1

Al2O3 Aluminium oxide

• Write down the symbols of the elements / ions, which combine to form a molecule of the compound, side by side.Write the valency of each element / ion.
• Write the valency of each element / ion.
• Interchange the valencies of the elements / ions and write as the subscript.

Answer 2

Answer:

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Explanation:

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