Question

the atomic number of alluminium is 13 ,write its formula​

Answer 1

Answer:

Atomic no. of Aluminum = 13

Formula = Al

Answer 2

Answer:

al

Explanation:

Alumunium does not exist as a molecule as it is a metal (cannot form covalent bonds to share electrons). It can only take part in ionic bonds where formation of ions occur. The valency of alumunium is +3, so formula of it's compounds will Al(OH)3 etc. It is found naturally as the ore bauxite, which Al(OH)3 with some impurities like Fe2O3. Thus, it doesnot have a formula as such and is written as Al. Hope this helps:)