Answer : The number of ions are,
Explanation : Given,
Mass of = 99.6 mg = 0.0996 g
Conversion used : (1 mg = 0.001 g)
Molar mass of = 126.05 g/mole
First we have to calculate the moles of .
Now we have to calculate the number of .
As we know that, dissociate to give 2 moles of and 1 mole of .
From this we conclude that,
As, 1 mole contains number of ions
So, mole contains number of ions
Therefore, the number of ions are,