Who Wants To Be A FoG Millionaire?

[Declan A Walsh]

I had an inkling it might have been the answer it was as I knew Fe was iron, but I was not sure about Au and Ag, although I did suspect the latter was gold. My dilemma was which lifeline to use. I had a feeling that I might not be the only one stuck so I ruled out Ask The Audience on that basis. I did consider 50-50, but it would have really only worked for me properly if the wrong option offered was Fe. So, that just left Phone A Friend. I had a feeling that EN would know this one. Thanks EN.