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Solution


Q.

Two electrons are moving in orbits of two hydrogen-like atoms with speeds 3×105 m/s and 2.5×105 m/s respectively. If the radii of these orbits are nearly same, then the possible order of energy states are _______ respectively.             [2026]
1 8 and 10  
2 6 and 5  
3 10 and 12  
4 9 and 8  

Ans.

(2)