Question

What is the molar mass of \[F{{e}^{3+}}\]. How many ions does it have and what is the mass of the ion one mole of compound?

Answer 1

Hint: The mass of single electron is approximately \[2000\] times smaller than those of a proton and a neutron, So you can safely assume that the addition of electrons in the can of cation has little to no impact on moles mass.

Complete step by step answer:
\[F{{e}^{3+}}\to \] iron \[\left( 3+ \right)\] is an iron cation and a monatomic friction. It has a role as a human metabolite. The only difference between an \[Fe\] atom and an \[F{{e}^{3+}}\] ion is three electrons.
\[\to \]The electrons have so little mass compared to the rest of the atom that their masses. The molar mass of \[Fe\] and \[F{{e}^{3+}}\] are the same \[55.845g/mol.\]
\[\to \] Moreover, \[1\]mole of \[F{{e}^{3+}}\] cation contains exactly \[{{6.022.10}^{23}}\] \[F{{e}^{3+}}\] cation as Avogadro’s number and if we \[2\] moles of \[F{{e}^{3+}}\] ions, their weight is going to be twice the weight of one mole, if we have \[0.5\]moles the weight of the ions will the weight one mole.
\[\to \] The molar masses of and of \[F{{e}^{3+}}\] are the same \[55.845g/mol\].
The mass of \[F{{e}^{3+}}\] in mol of compound depends on the formula of the compound.
For example \[11\]mole of \[Fe{{\left( N{{o}_{3}} \right)}_{2}}\] contains / mol of \[F{{e}^{3+}}\] ions.
But \[1-mol\] of \[F{{e}_{2}}{{\left( S{{o}_{4}} \right)}_{3}}\] contains \[2mol\] of \[F{{e}^{3+}}\] ions. The molar mass is the mass of \[1mol\] of atoms of that element for a covalent molecular compound.

Note: The mass of \[F{{e}^{3+}}\] in \[1\] mol of compound depends on the formula of the compound for compounds, the molecular mass is numerically the same as the mass of one mole of the compound in grams.