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In Bohr's model, atomic radius of the first orbit is γ the radius of the 3rd orbit, is: (1) γ/ 3 (2)γ (3) 3γ (4) 9γ Ans: 9γ
The total number of valence electrons in 4.2 gm N - 3 of ion is ( N A is the Avogadro's number): (1) 1.6N A (2) 3.2N A
The four quantum number for the valence shell electron or last electron of sodium (Z = 11) is: (1) n =1, l= 1, m= -1, s= -1/2 (2) n =3, l=0, m=0, s= +1/2 (3) n =3,
Q. Application of electrometallurgy? In theory, aluminium metal would be made the same way. But, aluminium trichloride is covalent and it does not conductor of electricity. As
properties of s block elements (point wise)
What is the net flux of the uniform electric field of Exercise 1.15 through a cube of side 20 cm oriented so that its faces are parallel to the coordinate planes?
what groups comprise each block of elements in the periodic table?
Q. Illustrate Structure of the Water Molecule? Ans. A water molecule is composed of two hydrogen atoms and one oxygen atom covalently bonded together. The following anim
what are the chemical properties of protium, deuterium and tritium.
Problem 1: Briefly describe about the stage of research prior to drug development. Definition of drug development Stage of research prior to drug development P
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