Atomic structure, Chemistry

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Cathode rays have

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Elements, how to remember tyhem

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General principles for naming organic compounds In the general system, all the isomeric alkanes (having similar molecular formula) have the the same parent name. The names of

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Number of unpaired electrons in  Mn 4+ is: (1) 3        (2) 5         (3) 6       (4) 4 Ans: 3

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General Tests of Esters (a) Esters has sweet smell (b)  Esters is neutral towards litmus (c) A pink colour is developed while one or two drops of phenolphthalein are adde

Energy of the electron in hydrogen atom is given, Energy of the electron in...

Energy of the electron in Hydrogen atom is given by: (1) E n = 131.38/ n 2 x kj mol -1         (2)  E n = 131.33/n xkj mol -1           (3) E n = 1313.3/ n 2 x kj mol

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Ionization energy of group: Why does Ionization energy of group IIA elements decrease from Be to Ra?  A. As the atomic size increases from Be to Ra, the attraction between

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Q. What is Entropy? Ans. The strangest thing about entropy is that it is denoted by the letter S. Entropy is the measure of the disorder in a system. A system with low en

Colloides, difference between organic & inorganic colloides ?

difference between organic & inorganic colloides ?

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