It means, appearing or occurring at intervals or relating to the Periodic Table of the elements or pattern of chemical properties that underlies it. Look it up on Google and it will show up first thing!
metals
Hydrogen
the horrizantal row in a peridoc table is the scientists that invented that tipe of element eg: es - is einsteinium is the name of the scientist and the real name to that element is Einstein who is verry famous
They're called groups
inert or noble gases
The rows on the periodic table are called periods.
The periodic table is in order of atomic mass
CI4 * carbon (IV) iodide * carbon iodide * carbon tetraiodide * tetraiodomethane
Metalloids are the elements that are found to the right of the zig zag in the periodic table
The mathematical term for "mean" is "mean".The popular, or colloquial term for "mean" is "average".
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