Q1. What is the electronic configuration of Cr (Z = 24) in its ground state?A. [Ar] 3d 4 4s 2B. [Ar] 3d 5 4s 1C. [Ar] 3d 6D. [Ar] 3d 3 4s 2 4p 1
Q2. Which transition metal has the highest melting point among all transition elements?A. CrB. WC. FeD. Ni
Q4. What is the primary reason for the high melting points of transition metals?A. Small atomic sizeB. Involvement of d-electrons in bondingC. Low ionization energyD. Presence of f-electrons
Q5. What is the effect of lanthanoid contraction on the atomic sizes of post-lanthanoid elements?A. Increases their sizesB. No effectC. Makes 4d and 5d elements similar in sizeD. Decreases their densities
Q7. What is the primary reason for the high melting points of transition metals?A. Small atomic sizeB. Involvement of d-electrons in bondingC. Low ionization energyD. Presence of f-electrons
Q8. Which lanthanoid exhibits +4 oxidation state due to its noble gas-like configuration?A. LaB. CeC. GdD. Lu
Q9. Which of the following transition metal compounds is diamagnetic?A. FeSO 4B. CuSO 4C. ZnSO 4D. NiSO 4
Q10. Which of the following is a characteristic property of f-block elements?A. Variable oxidation statesB. Lanthanoid contractionC. High volatilityD. Formation of colored ions