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Q. Explain about Atomic Radius?
The atomic size decreases with increase in atomic number along any period in the long form of the periodic table due to increase in effective nuclear charge. Though, the decrease in atomic radius is small when the difference in electronic configuration from one element to the next is that of an additional inner electron. This is due the additional inner electron screens the size-determining outer electrons from the nucleus much better than an additional outer electron. For example, decrease in the covalent radius from Sc to Zn; i.e., across ten elements of the 3d transition series, is 19 pm. this. Decrease is almost one-third of the decrease in the covalent radius of the seven elements of s and p blocks of the period 3.
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how to find out oxidation state?
The amount of electricity required to produce one mole of copper from sulphate solution will be how many faradays? Ans) 2 faraday of electricity is required to produce one mol
when H+ is removed from any compound it forms conjugate acid. the addition of H+ ion gives conjugate base.
What are the chemical laws and their verification
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The reaction A ? B + C is known to be zero order in A and to have a rate constant of 5.0 x 10-2 mol/L·s at 25 oC. An experiment was run at 25 oC where [A]0 = 1.0 x 10-3 M. a)
The maximum number of unpaired electron can be present in d orbitals are: (1) 1 (2) 3 (3) 5 (4) 7 Ans: 5
Determine minimum solvent flow rate: It is necessary to process 100 kg/min of a water stream containing 15 percent acetic acid by weight. Refer to the data in the table below
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