Question

Fill in the blanks.
 Salts of ______ [normal / transition] elements are generally coloured.  From the ions K¹⁺, Cr³⁺, Fe²⁺, Ca²⁺, \[\ce{SO^2-_3}\], \[\ce{Mn^1-_4}\],\[\ce{NO^1_3}\] the ions generally coloured are ______.

Answer 1

 Salts of transition elements are generally coloured.  From the ions K¹⁺, Cr³⁺, Fe²⁺, Ca²⁺, \[\ce{SO^2-_3}\], \[\ce{Mn^1-_4}\],\[\ce{NO^1_3}\] the ions generally coloured are Cr³⁺, Fe²⁺, MnO₄^4-.