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The minimum amount of energy needed for the reaction to takes place is known as threshold energy.
An element X with the electronic configuration 1s 2 , 2s 2 , 2p 6 , 3s 2 , would be expected to form the chloride with the formula: (1) XCl 3 (2) Xcl 2 (3) XCl
What are the advantaged and disadvantages of a double beam spectrophotometer
Question: (i) Differentiate between ionic, metallic, covalent and dipole-dipole bonds. Provide examples in each case. (ii) With regard to electronic con?guration, what do a
The ratio of the concentration of the products raised to its stoichiometric coefficient to the concentration of the reactants raised to its stoichiometric coeff. Mostly, higher th
Calculation of Number of Atoms per Unit Cell of HCP (n): One half of the each of the 2 base centre atoms (2x1/2), one six of the every of the 12 corner atoms (12x1/6) and all
the diagnal relationship in periodic table
The third line in Balmer series corresponds to an electronic transition between which Bohr's orbits in hydrogen: (1) 5 → 3 (2) 5 → 2 (3) 4→ 3
Q. Explain Collision Theory? Ans. Why do some reactions take place faster than others? What actually happens in a chemical reaction? Consider a gaseous reaction of the typ
what is first transition series
The maximum number of electrons which each sub-shell can occupy is: (1) 2n 2 (2) 2n (3) 2 (2l+1) (4) (2l+1) Ans: 2
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