chemicallibrary

In fact, which chemical are you referring to as “Th”? The information you provided is not sufficient for me to write a chemistry introduction. I need to know what “Th” is. If Th is Thorium, a chemical element in the periodic table with symbol Th and atomic number 90, here are the basic facts. Definition … Read more

Definition of Acid Acid is a chemical substance that exists in nature or is produced by humans. Acid can be solid, liquid, or gas, depending on temperature and pressure conditions. Acid often has a distinctive smell, turns litmus paper from blue to red, and can activate H+ ions in solution. 1.1 Names 1.1.1 Common name: … Read more

Definition of Ra Ra (Radium) is a chemical element with the symbol Ra and atomic number 88. Ra belongs to the alkaline earth metals group in the periodic table. 1.1 Names 1.1.1 Common name: Radium 1.1.2 English name: Radium 1.2. Atomic number: 88 1.3. Atomic mass: Approximately 226 1.3.1 Molecular structure: Ra does not usually … Read more

Definition of Fr Francium, also known in English as Francium, belongs to the 7th period of the periodic table, group 1 (alkali). The atomic mass of Fr is 223 and the atomic mass unit is 223 atomic mass units (u). Francium has a simple molecular structure, mainly single Fr atoms. The main ion structure is … Read more

Definition of Rn Rn is the chemical symbol of Radon, a nonmetal element, the 86th chemical element in the periodic table. Radon belongs to the group of noble gases, primarily derived from the decay of Uranium and Thorium in the Earth’s crust. 1.1 Names 1.1.1 Common name: Radon 1.1.2 English name: Radon 1.2. Atomic mass: … Read more

Provide 5 examples [if any] Application of At Present the applications of At in society, economy, medicine, manufacturing, engineering, environment, etc. Safety when working with At Remind students about the safety rules when practicing chemistry with At. For each specific chemical, the teacher can fill appropriate information into the above template. For example, if the … Read more

Definition of Po Polonium (Po) is known to be a chemical element with the symbol Po and atomic number 84. It was discovered by Marie and Pierre Curie in 1898, and named after Marie’s homeland, Poland. Polonium belongs to the chalcogen group like oxygen, sulfur, selenium, tellurium, and livermorium. 1.1 Names 1.1.1 Common Name Polonium … Read more

Definition of Bi 1.1 Names 1.1.1 Common name: Bi (Bismuth) 1.1.2 English name: Bismuth 1.2 Atomic mass: 208 1.3 Atomic weight: 208.98 u 1.3.1 Molecular structure: Bi does not form molecules, it exists as an element 1.4 Ion structure: Bi can form Bi3+ ions. Properties of Bi 2.1 Physical properties of Bi State: solid Color: … Read more

Definition of Pb Pb is the chemical symbol for Lead, a heavy metal belonging to group IVA in the periodic table, with an atomic number of 82. Pb comes from the Latin word “Plumbum,” and its English name is Lead. The atomic mass of Pb is 207.2 and it has an atomic number of 82. … Read more

Definition of Tl (Thallium) Thallium, symbolized as Tl in the periodic table, is a chemical element in group 13. The atomic mass of thallium is 204.4 amu. Thallium has a similar atomic structure to other elements in the same group, consisting of a nucleus containing protons and neutrons, surrounded by electron shells. Thallium can form … Read more