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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
Why a covalent bond is directional? The covalent bond is formed as a result of pairing of two electrons in the atomic orbitals of two atoms. The bond then should lie along the
what happens to the reaction rate when the concentration changes
Which of the following is isoelectronic with carbon atom: (1) Na + (2) Al +3 (3) O 2- (4)N + Ans: N +
There energy becomes lesser due to completely filled orbitals.
Q. Define the Planck constant? The energy of a photon ( E photon) of a certain frequency (violet) is able to be calculated by using the following equation in which h represen
dithiazone.
Substitution reactions Replacement of a molecule or set/group of the substrate by any another type of atom or group is termed as substitution reactions. Examples :
Purpose
WHAT DOES DSA STAND FOR
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