Q.

According to Bohr’s atomic theory:
a) Kinetic energy of electron is directly proportional to Z2
b) The velocity (v) of electron is directly proportional to principal quantum number (n)
c) Frequency of revolution of electron in an orbit is directly proportional to                                                principal quantum number(n)
d) Coulombic force of attraction on the electron is directly proportional to Z3
Choose the most appropriate answer from the options given below:

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a

(A) only

b

(A), (C) & (D) only

c

(A) and (D) only

d

(C) only

answer is C.

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Detailed Solution

(A):KE  α z2n2 (B) speed of electron α zn (C)Freequency of electron α αz2n3 (D)Coulombic forces α z3n4

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