Draw the electron dot structure of :
(i) Nitrogen molecule [N=7]
(ii) Sodium chloride [Na=11, Cl=17]
(iii) Ammonium ion [N=7, H=1]

(i) Electron dot structure of Nitrogen molecule is shown below:

(ii) Electron dot structure of Sodium chloride is shown below:

(iii) Electron dot structure of Ammonium ion is shown below: