Which of the following element does not show variable valency (a) Ni (b) Zn (c) Cu (d) Mn Which of the following element does not show variable valency (a) Ni (b) Zn (c) Cu (d) Mn November 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related