JEE Main20208 Jan 2020Evening ShiftChemistrys Block ElementsActual
The radius of the second Bohr orbit, in terms of the Bohr radius, a 0 , in Li 2 + is:
Options
- A2 a 0 3
- B4 a 0 9
- C4 a 0 3
- D2 a 0 9
Correct answer
C. 4 a 0 3
Step-by-step solution
Radius of Bohr's orbit is given as, r = a 0 n 2 Z n = orbit number Z = atomic number For 2 nd Bohr's orbit of Li 2+ Li 2 + , r = a 0 2 2 3 = 4 a 0 3