An element with atomic number 21 is a (a) Transition element (b) Alkali metal (c) Halogen (d) Representative element An element with atomic number 21 is a (a) Transition element (b) Alkali metal (c) Halogen (d) Representative element November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related
