The valence shell electronic configuration of Cr 2+ ion is (a) 4s0 3d4 (b) 4s2 3d2 The valence shell electronic configuration of Cr 2+ ion is (a) 4s0 3d4 (b) 4s2 3d2 November 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,