Označeno: simboli elementov

viri: https://www.diet-health.info/en/recipes/nutrients/nu/oi222-iod-i-jod-j https://sites.google.com/site/zlatiinnezelezen/zlato https://www.pngkey.com/download/u2q8t4u2w7a9t4u2_oxygen-molecule-png-oxygen-molecule/ https://www.bolha.com/rudnine-kamnine-minerali/minerali-kristali-zveplo-oglas-5584808 https://www.thebigweddingstore.com/sl/product/helium-balloons-for-engagement/