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The Bohr orbit radius for the hydrogen atom (n=1) is approximately 0.530Å . The radius for the first excited state (n=2) orbit is:
(1) 0.13Å
(2) 1.06Å
(3) 4.77Å
(4) 2.12Å
Ans: 2.12Å
0.45 g of anhydrous oxalic acid is reacted with 50 ml of KMNO4 . Then normality of KMnO4 is??
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The four quantum numbers of the outermost orbital of K (atomic no. =19) are: (1) n= 2, l= 0, m=0, s= +1/2 (2) n= 4, l= 0, m=0, s= +1/2 (3) n= 3, l= 1,
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