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Borazole is very stable because it is aromatic; each nitrogen contributes two p electrons and each boron contributes zero electrons, for a total of six p electrons in the aromatic
Reaction of nickel cadmium storage cell charging #Minimum 100 words accepted#
Fractional distillation - Purification of organic compounds This method is used to separate a mixture of two or more miscible liquids that have boiling points close to each oth
Hookes Law simulation Using a horizontal and a vertical spring that this applet simulates Hooke's law and easy harmonic motion. As discussed previously, the amount of stretchin
Which of the following sets of quantum numbers represent an impossible arrangement: n l m m2 (1) 3 2 - 2 (+)
Hydrogen Peroxide Hydrogen peroxide is the other important hydride of oxygen. The oldest method of its preparation is by the action of dilute sulphuric acid on barium peroxide
Illustrate the following observations: (a) Cottrell's smoke precipitator is fitted at the mouth of the chimney used in factories. (b) Ferric hydroxide sol. Gets coagulated
Saytzeff rule
An element has the electronic configuration 1s 2 , 2s 2, 2p 6 , 3s 2 , 3p 2 . Its valency electrons are: (1) 6 (2) 2 (3) 3 (4)4 Ans: 4
LIST METALIC AND NON METALIC ELEMENTS
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