Assertion : Ionisation potential across the period is Na < Al < Mg < Si. Reason : Ionisation potential decreases with decrease in atomic size. Assertion : Ionisation potential across the period is Na < Al < Mg < Si. Reason : Ionisation potential decreases with decrease in atomic size. November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related