The most abundant transition metal in the human body is

Which of the following is ferromagnetic in nature?

Where are the transition elements and inner transition elements located in the periodic table?

Which of the following oxides has the maximum basicity?

Predict which of the following will be coloured in aqueous solution: $Ti^{3+}, V^{3+}, Cu^{+}, Sc^{3+}, Mn^{2+}, Fe^{3+},$ and $Co^{2+}$. Give reasons for each.

Cerium $(IV)$ has a noble gas configuration. Which of the following is the correct statement about it?