The K alpha X-ray emission line of tungsten occurs at lemda = 0.021 nm. What is the energy difference between K and L levels in this atom? The K alpha X-ray emission line of tungsten occurs at lemda = 0.021 nm. What is the energy difference between K and L levels in this atom? September 11, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related