calcium + oxygen Calcium's element name is Ca Oxygen's element name is O
it stands for calcium oxide,
Pelopium
Lutetium see link
Zr stands for Zirconium on the periodic table.
Nothing . . . there is no element with the symbol, "T".
NA is the symbol for sodium.
Sr stands for strontium on the periodic table of elements.
Pelopium
roentgenium
dubnium
As=Arsenic
Germanium
tin
Iodine.
As is the chemical symbol of arsenic.
Mg for magnesium
Argon is what Ar stands for on the Periodic Table of elements.
Because A doesn't stand for anything.