General configuration of outermost and penultimate shell is (n-1) s2 (n-1) p6 (n-1)dx ns2. If n = 4 and x = 5 then no. of proton in the nucleus will be General configuration of outermost and penultimate shell is (n-1) s2 (n-1) p6 (n-1)dx ns2. If n = 4 and x = 5 then no. of proton in the nucleus will be December 2, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related