JEE Main 2026 · 2 Apr · Shift 2, Chemistry question 74

Number of paramagnetic ions among the following d- and f-block metal ions is ________.
$\ce{Mn^{2+}}$, $\ce{Cu^{2+}}$, $\ce{Zn^{2+}}$, $\ce{Yb^{2+}}$, $\ce{Sc^{3+}}$, $\ce{La^{3+}}$, $\ce{Gd^{3+}}$, $\ce{Lu^{3+}}$, $\ce{Ti^{4+}}$, $\ce{Ce^{4+}}$
(Atomic number of Mn = 25, Cu = 29, Zn = 30, Yb = 70, Sc = 21, La = 57, Gd = 64, Lu = 71, Ti = 22, Ce = 58)