Identify the element having the highest ionization enthalpy among the given options.

Which of the following represents the correct order of the given properties?

The electronic configuration of $Cr^{3+}$ is

The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of transition elements which shows the highest magnetic moment.

Which of the following transition metals has the lowest density?

Fill in the blanks:
$(a)$ The ground state electronic configurations of $Cr$ and $Cu$ are .......... and ..........,respectively.
$(b)$ Transition elements exhibit certain characteristic properties due to partially filled $d$-orbitals.
$(c)$ The general electronic configuration of transition elements is .......... .