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Chromium has the electronic configuration 4s 1 3d 5 rather than4s 2 , 3d 4 because: (1) 4s and 3d have the same energy (2) 4s has a higher energy than 3d (3)4s 1 is
Uses of Dihydric alcohols (a) Dihydric alcohols are used as antifreeze in car radiators. (b) Dihydric alcohols is used in the manufacture of dacron, dioxane etc. (c) Dihy
polonium crystallizes in a simple cubic unit cell with an edge length of 3.36A. 1. what is the volume of the unit cell? 2. what is the volume of atom in the unit cell? 3. what i
The postulate of Bohr theory that electrons jump from one orbit to the other, rather than flow is according to : (1) The quantisation concept (2) The wave nature of elect
Strategy 3 Two levels of wheat flour 3960g and 3940g and two levels of baking powder 60g and 40g are selected to be tested. In all trials the percentages of A, B and C are fix
Q. Describe Electrochemistry Electricity (i.e., electric current) is a flow of electric charges. In metals, it is the flow of electrons. In electrolytes, it is the mov
how much time will it require to spend 0.1 mole of rupees when the average rate of expenditure is 1 billion rupees per second?
hypothesis for this lab "finding the missing mass"
Q.Illustrate the Basic structure of polymers? Ans. Polymers are large organic compounds made of regularly repeating units. Plastics are made of polymers. Polymers ar
The π electrons of a conjugated molecule can be modeled as a particle in a box where the box length is a little more than the length of the conjugated chain. The Pauli exclusion pr
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