If in the Bohr's model for unielectronic atom, the time period of revolution is represented as Tn,z, where, n represents the shell number and Z represents the atomic number then, the value of T1,2:T2,1 will be:
A
8 : 1
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B
1 : 8
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C
1 : 1
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D
1 : 32
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Solution
The correct option is D 1 : 32 T∝n3Z2
T1,2∝14 since n=1 and Z=2 T2,1∝81 since n=2 and Z=1