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Question : 9
Total: 30
Using Rutherford model of the atom, derive the expression for the total energy of the electron in hydrogen atom. What is the significance of total negative energy possessed by the electron?
OR
Using Bohr's postulates of the atomic model, derive the expression for radius ofn th electron orbit. Hence, obtain the expression for Bohr's radius.
OR
Using Bohr's postulates of the atomic model, derive the expression for radius of
Solution:
According to Rutherford,
=
m v 2 =
Total energy = P.E. + K.E.
= −
+
= −
The negative sign shows that electron-nucleus form an abound system.
OR
According to Bohr's model, electrons revolve around the orbits such that their angular momentum is an integral multiple of
m v r =
=
r =
The negative sign shows that electron-nucleus form an abound system.
OR
According to Bohr's model, electrons revolve around the orbits such that their angular momentum is an integral multiple of
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