Which of the following pairs involves isoelectronic ions (a) Mn 3+ and Fe 2+ (b) Mn 2+ and Fe 3+ Which of the following pairs involves isoelectronic ions (a) Mn 3+ and Fe 2+ (b) Mn 2+ and Fe 3+ November 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,