The radius of electron ion the first excited state of hydrogen atom is (a) a0 (b) 4a0 (c) 2a0 (d) 8a0 The radius of electron ion the first excited state of hydrogen atom is (a) a0 (b) 4a0 (c) 2a0 (d) 8a0 November 27, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP [...]