The formation of the oxide ion O 2- requires first an exothermic and then an endothermic step as shown below This is because The formation of the oxide ion O 2- requires first an exothermic and then an endothermic step as shown below This is because November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related