In comparison of ferrous salts,ferric salts are

'Spin only' magnetic moment is same for which of the following ions?
$A$. $Ti^{3+}$ $B$. $Cr^{2+}$ $C$. $Mn^{2+}$ $D$. $Fe^{2+}$ $E$. $Sc^{3+}$
Choose the most appropriate answer from the options given below.

Which of the following electronic configurations represents an atom that can exhibit the highest oxidation state?

An atom with atomic number $21$ belongs to the category of

Which of the following sets correctly represents the increase in the paramagnetic property of the ions?

What are $f$-block elements? Give their characteristics.