Chemical elements questions This is a list of recently added questions about chemical elements. Play chemical elements quiz and see all the questions. Which of these elements is not a micronutrient?Tin. copper, zinc and manganese are micronutrients. They are necessary for the proper functioning of our body. However, Tl (tal) is very toxic.Created by: Tschuka hard 59% MnMn37ZnZn64TinTin265CuCu82metals riddles » Which of the following metals is the most reactive?Cesium. Caesium or cesium is a chemical element with symbol Cs and atomic number 55. It is a soft, silvery-gold alkali metal . Is most reactive of all metals. Created by: Tschuka very hard 38% sodiumsodium68potassiumpotassium43rubidiumrubidium46cesiumcesium98chemistry riddles » What is the half-time of radiocarbon? (carbon-14)5730 years. Carbon-14, 14C, or radiocarbon, is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons. Carbon-12 and carbon-13 are both stable, while the half-life of carbon-14 is 5,730 ±40 years. Created by: Tschuka hard 49% 5 years5 years28557 years57 years662573 years573 years5595730 years5730 years1482geology riddles » What is the name of the most radioactive isotope on the planet?Polonium 210. 210Po is extremely toxic, with one microgram being enough to kill the average adult (250,000 times more toxic than hydrogen cyanide by weight).210Po was used to kill Russian dissident and ex-FSB officer Alexander V. Litvinenko in 2006,Created by: Tschuka very hard 19% Rad 226Rad 22663Uranus 235Uranus 235171Polonium 210Polonium 21079plutonium 244plutonium 24496physics riddles » What is the chemical symbol of mercury?Hg. The Latin name of mercury is "hydrargyrum" (meaning liquid silver - quicksilver), hence the symbol Hg. Ru is the chemical symbol of ruthenium, Rh - rhodium, Mt - meitnerium.Created by: globalquiz.orgvery easy 83% RuRu399RhRh888HgHg7182MtMt120chemistry riddles » What is the chemical symbol of manganese?Mn. Mg is the chemical symbol of magnesium. Mo is the chemical symbol of molybdenum.Created by: globalquiz.orgvery easy 80% MgMg940MoMo98MnMn5852MaMa416chemistry riddles » What is the chemical symbol of tin?Sn. The Latin name of tin is "stannum", hence the symbol Sn. Ti is the chemical symbol of titanium. Sb is the chemical symbol of antimony.Created by: globalquiz.orgvery easy 86% TiTi394TT264SnSn6390SbSb374chemistry riddles » What is the chemical symbol of silver?Ag. The Latin word for silver is "argentum", hence the symbol Ag. S is the chemical symbol of sulfur, Si - silicon, Au - gold.Created by: globalquiz.orgeasy 77% SS124SiSi258AuAu1212AgAg5490chemistry riddles » What is the chemical symbol of lead?Pb. The Latin name of lead is "plumbum", hence the symbol Pb. La is the chemical symbol of lanthanum, O - oxygen, Db - dubnium.Created by: globalquiz.orgvery easy 93% LaLa169PbPb7029OO225DbDb64chemistry riddles » What is the chemical symbol of helium?He. H is the chemical symbol of hydrogen. Hg is the chemical symbol of Mercury.Created by: globalquiz.orgvery easy 84% HH703HeHe6082HlHl302HgHg91gases riddles » Play chemical elements quiz and see all the questions.