In the modern periodic table of classification of elements, elements placed in sections 13 -18 are called p-block elements. Because the last electron in the orbit of each element of these classes is filled in the p-subsystem. The elements of the p-block and the elements of the s-block are collectively called representative elements or main group elements. The electronic configuration of the extracellular space of these elements is ns2np1 -6, where n is the last shell. The s-nucleus of the last shell of the elements of this block already has two electrons and the p-sub cell contains one to six electrons, while the first cell from the extracellular space contains 8 or 18 electrons. Let's know more about p block elements in the periodic table.
1. In which reaction does SO2 act as an oxidizing agent?
A. Acidified C2H5OH
B. Acidified KMnO4
C. Acidified K2Cr2O7
D. H2S
2. The oxidation state of the central atom in the anion of compound {NaH2PO2} will be:
A. +1
B. +2
C. +3
D. +4
3. A brown ring is formed in the ring test for {NO – 3} ion. It is due to the formation of of….
A. [Fe (H2O) 5 (NO)] 2+
B. FeSO4.NO2
C. [Fe (H2O) 4 (NO) 2] 2+
D. FeSO4.HNO3
4. The molecule having the smallest bond angle is…..
A. AsCl3
B. SbCl3
C. PCl3
D. NCl3
5. Water is oxidized to oxygen by…
A. ClO2
B. KMnO4
C. H2O2
D. F2
6. Which type of shape of the XeO2F2 molecule?
A. Trigonal bi-pyramidal
B. Square planar
C. Tetrahedral
D. See-saw shaped
7. Which of the following is present as an active constituent in bleaching powder for bleaching action?
A. Ca (OCl) 2
B. CaO2Cl
C. CaCl2
D. CaOCl2
8. Which one of the following noble gas is used in min further lamp?
A. Helium
B. Neon
C. Argon
D. Krypton
9. Which one of the following fluoride of Xe has zero dipole moment?
A. XeF6
B. XeF4
C. Both of the above
D. None of the above
10. The geometry of H2S and its dipole moment are Angular/ Linear and……
A. Linear and zero
B. Linear and non zero
C. Angular and non zero
D. Angular and zero
11. H2S does not produce metallic sulfide with which of the following?
A. CoCl2
B. CuCl2
C. CdCl2
D. ZnCl2
12. In the laboratory, H2S is prepared by the action of…
A. Hydrogen on sulfur
B. Hydrogen on Sb2O3
C. Dilute H2SO4 on Fes
D. Dilute H2SO4 on Sb2O3
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