Question

Give the chemical formula of Sodium aluminate.

Answer 1

Hint: We must understand the definition of molar mass as well as the composition of sodium aluminate in order to create its formula. The empirical formula demonstrates the simplest whole-number ratio of atoms in a compound, whereas the molecular formula demonstrates the number of each type of atom in a molecule. A chemical compound's molar mass is the mass of that compound multiplied by the number of atoms in that molecule, given in moles.

Complete answer:
The procedures for writing a compound's chemical formula are as follows:
1. From the periodic table, we write the element's symbol as well as its charge.
2. If the chemical contains a polyatomic ion, we determine its name and charge.
3. We add the subscripts to balance the charges.
The given compound is sodium aluminate. The constituents are sodium and the aluminate ion. The symbol for sodium is $Na$ and it carries a $ + 1$ charge as it belongs to group 1 of the periodic table. The symbol for acetate is $Al{O_2}$ and it carries a $ - 1$ charge. Hence, the chemical formula of sodium aluminate becomes $NaAl{O_2}$.

Note:
It's worth mentioning that a compound's molar mass is known by a variety of common names. Among other names, the density of one mole of a substance in grammes per mole is referred to as molecular mass, molecular weight, or gramme formula mass. Even though the atomic masses of the different elements in a periodic table are frequently decimals, the approximated full integer is utilised in computations for simplicity.