Which element having following electronic configurations has minimum ionisation potential (a) 1s1 (b) 1s2, 2s2 2p6 2s2 2p6 Which element having following electronic configurations has minimum ionisation potential (a) 1s1 (b) 1s2 November 10, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) ,