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Q. Chemical Properties of group16? Oxygen is slightly less reactive than the halogens but reacts directly with nearly all the elements except the noble gases, the halogens and
what are the uses of laws of chemical combination
Q. Study of Elements of group 16? We shall discuss Group 16 elements, viz., oxygen, sulphur, selenium, tellurium and polonium. These elements are called chalcogens or the ore f
Principal quantum number of an atom represents : (1) Size of the orbital (2) Spin angular momentum (3) Orbital angular momentum (4) Space orientation of the orbital
Binary phase diagrams of two component systems are usually Two dimensional plots of temperature and composition.
why f block is out from periodic table
Q. Use of Reactants in Excess? Ans. Consider a recipe for pancakes that calls for 2 cups of pancake batter mix and 1 cup of water. The result of this recipe is 14 pancakes
Which of the following compounds is ionic: (1) Kl (2) CH 4 (3) Diamond (4) H 2 Ans: Kl
Vat dyes: These dyes are insoluble in water and cannot be helpful directly. These dyes on decline along with sodium hydrosulphite (NaHSO 3 ) in a vat make a soluble compound th
Question: (a) Explain the precautions that should be taken by plant operators while handling chlorine gas used in disinfection of wastewater. (b) Show why disinfection of sl
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