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Physical properties of Aromatic Nitro Compounds (a) Aromatic nitro compounds are insoluble in water although soluble in organic solvents. (b) They are either pale yellow liq
Q. Briefly Describe Problems and Applications of Radioactivity? Ans. All radiation, electromagnetic as well as the kind from nuclear decay, takes its toll on living organi
How many grams of water can be produced when 11.7 moles of ethane (C2H6) react with excess oxygen gas? Unbalanced equation: C2H6 + O2 ? CO2 + H2O Show, or explain, all of your w
How many atomic number does have Ne Because Ne has atomic number = 10 and F has atomic number = 9, the neon species that has 9 electrons is Ne+
Q. What is speed of light wave? Ans. Light is just one type of wave. Like all waves it can be characterized by frequency, wavelength and amplitude. Similarly, light waves ca
Chromium has the electronic configuration 4s 1 3d 5 rather than4s 2 , 3d 4 because: (1) 4s and 3d have the same energy (2) 4s has a higher energy than 3d (3)4s 1 is
The expression for Bohr's radius of an atom is: (1) r= n 2 h 2 / 4 Π 2 me 4 z 2 (2) r= n 2 h 2 / 4 Π me 2 z 2 (3) r= n2h2/4 Π me 3
tests for the presence of iodoform
Give reasons for the following: a. Molten aluminium bromide is poor conductor of electricity. b. Nitric oxide becomes brown when released in air. c. PCl
what is allotropy
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