JEE Main 202522 Jan, Morning shiftChemistryEasyAtomic Structure113× since 2002Radius of the first excited state of Helium ion is given as: a0→a_0\toa0→ radius of first stationary state of hydrogen atom.AOption A. r=4a0r=4a_0r=4a0BOption B. r=2a0r=2a_0r=2a0COption C. r=a04r=\frac{a_0}{4}r=4a0DOption D. r=a02r=\frac{a_0}{2}r=2a0CheckSkip · show solution
