H stands for the hydrogen atom He is helium Li is lithium NAMING ELEMENTS The chemical symbol and the name of the elements must be known before starting any discussion in chemistry. There is a correlation between the name and the chemical symbol. The chemical symbol is usually the first or the first and second letter of the name. H stands for the hydrogen atom He is helium Li is lithium Or it could be the first and third letter Mg is magnesium Mn is manganese Or it could be the letters for the “Old” (Latin, Greek, etc.) name Fe is iron (ferrum: latin) Cu is copper (cuprum)

NAMES OF ELEMENTS TO KNOW H = hydrogen atom Si = silicon Ag = silver He = helium P = phosphorus Sn = tin Li = lithium S = sulfur Zn = zinc Be = beryllium Cl = chlorine Ar = Argon B = boron Ba = barium Ni = nickel C = carbon K = potassium (kalium) Pb = lead N = nitrogen atom Ca = calcium Xe = xenon O = oxygen atom Cr = chromium Au = gold F = fluorine atom Fe = iron (ferrum) Ne = neon Hg = mercury Na = sodium (natrium) Cu = copper (cuprum) Mg = magnesium I = iodine atom Al = aluminum Br = bromine atom

NAMING ELEMENTS There are 7 homonuclear diatomic elements. These elements do not exist “alone” readily under the conditions experienced on the surface of the Earth. H - hydrogen atom H2 - hydrogen N - nitrogen atom N2 - nitrogen O - oxygen atom O2 - oxygen F - fluorine atom F2 - fluorine Cl - chlorine atom Cl2 - chlorine Br - bromine atom Br2 - bromine I - iodine atom I2 - iodine You must be extra careful (& specific) when naming these elements

NAMING ELEMENTS PRACTICE PROBLEMS Name the following elements or give the appropriate symbol: _____ S _____ calcium _____ Co _____ Ar _____ oxygen _____ C _____ P _____ aluminum _____ Zn _____ Cu _____ sodium _____ Br _____ B _____ iron _____ Hg _____ Mg _____ potassium _____ Au Ca cobalt sulfur O2 argon carbon phosphorus Al zinc copper Na Bromine atom Fe boron mercury K magnesium gold