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Positronium consists of an electron and a positron (a particle which has the same mass as an electron, but opposite charge) orbiting round their common centre of mass. Calculate the value of the Rydberg constant for this system:
(1) R ∞ /4
(2)R ∞ /2
(3) 2R∞
(4) R∞
Ans:R∞ /2
Which of the following has more unpaired d-electrons: (1) Zn + (2) Fe 2+ (3) N 3+ (4) Cu + An
writethe sort farmula of learn the pariodik table.
De?ne Quoin and Queen closer De?ne Least count. Explain functions of the foundation
Quantitative determination of a number of ions like Cu, Ag, Zn, Fe, Ni, Co, Cd etc. has been done by using 1.2.3-benztiazole as precipitating agent under different experimental c
Q. Determine the Ionization in Solutions? Ans. Ionic compounds dissolve in water because the polar water molecule pulls apart the ions of the ionic compound. This process
benzoic acid from benzene.i can''t see it clearly
I am trying to calculate alcoholic acidity
covalent bond
uses of this topic
Explain the following observations: (i) Generally there is an increase in density of elements from titanium (Z = 22) to copper (z =29) in the first series of transition element
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