Question

In the wet tests for identification of various cations by precipitation, which transition element cation doesn't belong to group IV in qualitative inorganic analysis ?

• A. $Z n^{2+}$
• B. $Fe ^{3+}$
• C. $Ni ^{2+}$
• D. $Co ^{2+}$

Answer 1

Answer: (B)

$ Zn ^{2+}, Co ^{2+}, Ni ^{2+}= IV ^{\text {th }} \text { Group } $
$ Fe ^{3+}= III ^{ rd } \text { Group }$