Which of these have no unit (a) Electronegativity (b) Electron affinity (c) Ionisation energy (d) Excitation potential Which of these have no unit (a) Electronegativity (b) Electron affinity (c) Ionisation energy (d) Excitation potential November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,