(Reuters) - The world's biggest iron ore producer Rio Tinto is offering $9 billion in U.S. investment-grade bonds as the ...

This means that the chemical formula used for a metal is simply the symbol for the element. For example, the formula for iron is Fe, even though a piece of iron contains very many iron atoms.

Chemical bonding refers to the attraction between atoms ... media via electrochemical polymerisation of a pentanuclear iron complex. Among the first-row p-block elements that can form neutral ...