Which of the following graphs is the correct representation of the relationship between atomic number $(Z)$ and the magnetic moment of $d-$block elements? [Outer electronic configuration : $(n - 1)d^x\ ns^{1\ or\ 2}$]

Why are transition elements hard and do they possess high melting and boiling points?

Find the species having the magnetic moment value of $5.92 \ BM$.

Given below are two statements :
Statement $I$ : The higher oxidation states are more stable down the group among transition elements unlike $p-$block elements.
Statement $II$ : Copper can not liberate hydrogen from weak acids.
In the light of the above statements,choose the correct answer from the options given below :

Which elements were identified by spectroscopy of their minerals?

Which of the following has the highest paramagnetic character?