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According to Bohr's model of atom, the correct statements are
a) As ‘n’ value increases, velocity of electron decreases.
b) As ‘n’ value increases, energy difference between successive orbits decreases.
c) As ‘n’ value increases, radial distance between successive orbits decreases.
d) As ‘n’ value increases, kinetic energy of electron decreases.

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An Intiative by Sri Chaitanya

a, b, c and d

a and b only

b and c only

a, b and d only

answer is D.

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Detailed Solution

1) $V_{n} = \frac{Z}{n} V_{1}, \dots$ (a) is true

2) $E_{2} - E_{1} = 10 .2 eV; E_{3} - E_{2} = 1 .89 eV; E_{4} - E_{3} = 0 .66 eV$ …(b) is true

3) $∆ r$ (between successive orbits) = $r_{0} (n_{1} + n_{2})$ …..(c) is false

4) $K . E = + \frac{Z^{2}}{n^{2}} E_{1}$ ……(d) is true.

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