Question

How will you write Stock notations for the following compounds? 

i. AuCl₃ 

ii. SnCl₄ 

iii. SnCl₂ 

iv. MnO₂

Answer 1

i. AuCl₃ :

The charge on each element is Au³⁺ \(Cl_3^{1-}\). 

Hence, 

The stock notation is Au(III)Cl₃.

ii. SnCl₄ :

The charge on each element is Sn⁴⁺ \(Cl_4^{1-}\). 

Hence, 

The stock notation is Sn(IV)Cl₄.

iii. SnCl₂ :

The charge on each element is Sn²⁺ \(Cl_2^{1-}\).

Hence,

The stock notation is Sn(II)Cl₂.

iv. MnO₂ :

The charge on each element is Mn⁴⁺ \(O_2^{2-}\). 

Hence, 

The stock notation is Mn(IV)O₂.