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The electronic configuration (outermost) of Mn +2 ion (atomic number of Mn= 25 ) in its ground state is: (1) 3d 5 , 4s o (2) 3d 4 , 4s 1 (3
Q. Why we use Boron? Boron is used to increase the hardness of steels. Crystalline boron is used in transistors. Boron is a good neutron absorber and is used as shields and con
An Lewis acid-base dissociation of the bromide-essentially an SN1 reaction-gives an a-hydroxy carbo-cation, which is, by resonance, also the conjugate acid of acetophenone. Deproto
how can we test s2o3 in lab
The number of unpaired electrons in nitrogen is: (1) 1 (2) 3 (3) 2 (4) None of these Ans: 3
Comment on the validity of the following statements, giving reasons: (a) Thermodynamically an exothermic reaction is sometimes not spontaneous. (b) The entropy of steam is mo
if one ton contains 2000 pounds and the coal is 2% by mass sulfur, what is the mass sulfur in one ton of coal? how many grams of sulfur is this? how many moles of sulfur is this?
What is pH scale?
What is piezoelectricity Piezoelectricity provides us a means of converting electrical energy to presume new geometric positions and mechanical dimensions of the substance are
Factor of affecting conductions
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