Every question from past board papers on Colour, catalytic and magnetic properties, complexes, interstitial compounds, alloys, newest paper first. Open any question for its full worked answer.
Given below are two statements :
Statement I : Ferromagnetism is considered as an extreme form of paramagnetism.
Statement II : The number of unpaired electrons in a \(\mathrm{Cr^{2+}}\) ion (\(Z = 24\)) is the same as that of a \(\mathrm{Nd^{3+}}\) ion (\(Z = 60\)).
In the light of the above statements, choose the correct answer from the options given below :
Match List - I with List - II
List-I: A. Haber process B. Wacker oxidation C. Wilkinson catalyst D. Ziegler catalyst
List-II: I. Fe catalyst II. \(\mathrm{PdCl_2}\) III. \([(\mathrm{PPh_3})_3\mathrm{RhCl}]\) IV. \(\mathrm{TiCl_4}\) with \(\mathrm{Al(CH_3)_3}\)
Choose the correct answer from the options given below :
'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:
The calculated spin only magnetic moment of Cr\(^{2+}\) ion is :
