sebutkan unsur kimia yang kamu ketahui??? :)

hidrogen, helium, kalium, natrium, argon, ferrum, cupprum,alumunium, klorin, posfor, fluor, kripton, magnesium, uranium, zinc, nikel, titanium, kalsium, karbon, boron, lithium, cobalt

nitrogen (N), Hidrogen (H), Barium (Ba), Natrium (Na), Litium (Li), Magnesium (Mg), Kalsium (Ca), Kalium (K), oksigen (O), Rubidium (Rb), klorin (Cl), helium (He), neon (Ne), senon (Xe), radon (Rn),alumunium (Al)