Which of the following has lowest ionisation energy (a) Oxygen (b) Nitrogen (c) Fluorine (d) Sulphur Which of the following has lowest ionisation energy (a) Oxygen (b) Nitrogen (c) Fluorine (d) Sulphur November 9, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related