1 Metals Group 18 1 H Alkali metals 2 Hydrogen 6 Atomic number Alkaline-earth metals He 1.007 94 Symbol Transition metals Helium Group 1 Group 2 Key: C Other ...
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...Metals group h alkali hydrogen atomic number alkaline earth he symbol transition helium key c other carbon name nonmetals li be average mass b n o f ne lithium beryllium semiconductors boron nitrogen oxygen fluorine neon halogens noble gases na mg al si p s cl ar sodium magnesium aluminum silicon phosphorus sulfur chlorine argon k ca sc ti v cr mn fe co ni cu zn ga ge as se br kr eriod potassium calcium scandium titanium vanadium chromium manganese iron cobalt nickel copper zinc gallium germanium arsenic selenium bromine krypton rb sr y zr nb mo tc ru rh pd ag cd in sn sb te i xe rubidium strontium yttrium zirconium niobium molybdenum technetium ruthenium rhodium palladium silver cadmium indium tin antimony tellurium iodine xenon cs ba la hf ta w re os ir pt au hg tl pb bi po at rn cesium barium lanthanum hafnium tantalum tungsten rhenium osmium iridium platinum gold mercury thallium lead bismuth polonium astatine radon fr ra ac rf db sg bh hs mt uun uuu uub uuq francium radium actiniu...