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The ratio of specific charge of an electron to that of a hydrogen ion is

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Important Questions on Structure of Atom

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11th CBSE
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 86
If  E1, E2 and E3 represent respectively the kinetic energies of an electron, an α-particle and a proton each having same de-Broglie wavelength, then
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11th CBSE
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 87

As electron moves away from the nucleus, its

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11th CBSE
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 88
In Bohr's model of hydrogen atom, the period of revolution of an electron in the 1st orbit to that in the 2nd orbit are in the ratio
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11th CBSE
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 89

Three energy levels and the wavelengths of the lines produced by transitions are shown in the  figure below:

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Which one of the following relationships is correct?

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11th CBSE
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 90
The energy absorbed by each molecule (A2 ) of a substance is 4.4×10-19 J and bond energy per molecule is 4.0×10-19 J. The kinetic energy of the molecule per atom will be
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11th CBSE
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 91
The species Ar, K + and Ca2+ contain the same number of electrons. In which order do their radii increase?
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 92
Which one is the wrong statement?
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11th CBSE
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Pradeep's Chemistry Vol 1>Chapter 2 - Structure of Atom>Competition Focus>Q 93
Which of the following statement regarding spectral series is/are correct ?