Question

What ions are present in NaCl, Na2CO3, MgSO4, and NH4Cl?

Answer 1

In `NaCl` we get the sodium ion `Na^+` and the chloride ion `Cl^-`.

In `Na_2CO_3` we get 2 sodium ions and 1 carbonate ion `CO_3^(2-)`.

in `MgSO_4` we get a magnesium ion `Mg^(2+)` and a sulphate ion `SO_4^(2-)`.

In `NH_4Cl` we get an ammonium ion `NH_4^+` and a chloride ion `Cl^-`.

In each case these oppositely charged ions are held together by strong ionic bonds, and the molecules held together by strong intermolecular forces.