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(i) For an atom of an element having ato...

(i) For an atom of an element having atomic number Z, find the expression of the following parameter in SI unit :
(a) radius of the n-th Bohr orbit (`r_n)`
(b) Velocity of the electron in n-th orbit `(v_n)`
( c ) Total energy of the electron in n-th orbit `(E_n)`
Given , `in_0` =permittivity of free space, m=mass of electron, e= charge of electron and h =Planck's constnat)

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