The d-block and f-block elements in electronic configuration, element names, lanthanide, and actinide. Most all of these elements are also known as transition metals because they occupy a transitional zone in properties, between the strongly electropositive metals of groups 1 and 2, and the weakly electropositive metals of groups 13 to 16. In the modern periodic table, the elements in the middle of the block and p block are called transition elements or elements of d and block. All the elements in the red-colored part are transitions fixed. Remember that the elements of the denominator are called transition elements. The transition elements (n - 10d) remain dead by acting, the new electron entering the transition planes enters the orbital or the last electron neat orbit, and that is how great the effect of these elements is d and f block elements. Let's know more about d block and f block elements in the periodic table.
1. A transition metal exists in its highest oxidation state. Which is expected to behave?
A. An oxidizing agent
B. A central metal in a coordination compound
C. A chelating agent
D. A reducing agent
2. Which is the color of light absorbed by an aqueous solution of CuSO4?
A. Violet
B. Yellow
C. Orange-red
D. Read
3. H2SO4 to potassium permanganate and it exploded due to the formation of an explosive which is...
A. Mn2O7
B. Mn2O5
C. Mn2O3
D. None of these
4. Which observed Lanthanoid contraction of the following?
A. Xe
B. Ac
C. Gd
D. All of the above
5. The (NH4)2Cr2O7 is used in fireworks. The green colored powder blown in the air is...
A. CrO(O2)
B. Cr
C. Cr2O3
D. All of the above
6. Which one of the following lanthanoid ion is paramagnetic?
A. Eu2+
B. Lu3+
C. Ce4+
D. None of these
7. The hydrogen peroxide is added to acidified potassium dichromate, a blue color is produced due to the formation of which?
A. CrO5
B. Cr2O3
C. CrO3
D. All of the above
8. Actinoid exhibit more number of oxidation states in general than the lanthanoids is...
A. The actinoids are more reactive than the lanthanoids
B. The 5f orbitals extend farther from the nucleus than the 4f orbitals
C. The 5f orbitals are more buried than the 4f orbitals
D. None of these
9. Every Cu (II) halides are known except iodide. What the reason?
A. Cu2+oxidizes iodide to iodine
B. Cu2+ion has smaller size
C. Both of the above
D. None of these
10. The d-block elements have a tendency to exhibit two or more ------------- states.
A. Oxidation
B. Reduction
C. Both of the above
D. None of these
11. The f-block elements come in two series, in periods 6 and 7. All are -----------------.
A. None-metals
B. Metals
C. By-metals
D. All of the above
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