Possible Clues:

• Element used in old television tubes
• Hakluyt triumphantly includes a rare element
• Metallic element, its symbol unknown
• Chemical element; um, try it (anag.)
• All up, it sounds like with two teas you and I are in my element
• Silvery metallic element atomic no. 39
• Dry recipe? I admitted, I love the food element
• An element of mystery finally revealed in full
• Element used in CRTs and LEDs
• Silvery metallic element found in monazite and gadolinite