Determine the number of molecules contained in 1 mole of sodium sulfate.

A) 1.204 x 10^24 ions

B) 1.807 x 10^24 ions

C) 2.007 x 10^23 ions

D) 6.022 x 10^23 ions

                       1.807 × 10²⁴ Ions

Explanation:

                    One mole of any substance contains exactly 6.022 × 10²³ particles which is also called as Avogadro's Number. Too calculate the number of particles (molecules) contained by 1.0 moles of Na₂SO₄, we will use following relation,

          Moles  =  Number of Molecules ÷ 6.022 × 10²³ Molecules.mol⁻¹

Solving for Number of Molecules,

          Number of Molecules  =  Moles × 6.022 × 10²³ Molecules.mol⁻¹

Putting values,

          Number of Molecules  =  1.0 mol × 6.022 × 10²³ Molecules.mol⁻¹

          Number of Molecules  = 6.022 × 10²³ Molecules of Na₂SO₄

Now,

Also Na₂SO₄ contains three ions, i.e.

                             Na₂SO₄   →   ( Na⁺ + Na⁺ + SO₄²⁻ )

Hence, the number ions will be calculated as,

No. of Ions  =  6.022 × 10²³ × 3

No. of Ions  =  1.807 × 10²⁴ Ions

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.