MALE STUDENT: 43 protons? MALE PROFESSOR: That’s right. But they named it technetium to emphasize that it was artificially created — with technology.And people thought that synthesizing this element, making it artificially, was the only way to get it.We still hadn’t found it occurring in...
2 This question is about hydrogen, the element with atomic number Z =1.(a)(i) Hydrogen has two stable isotopes, H and H. Complete the table to show the number of subatomic particles present in the nuclei of these two isotopes of hydrogen.(1)Isotope Number of protons Number of neutrons...
MALE STUDENT: 43 protons? MALE PROFESSOR: That’s right. But they named it technetium to emphasize that it was artificially created — with technology.And people thought that synthesizing this element, making it artificially, was the only way to get it.We still hadn’t found it occurring in...
Atoms from an element, in group IIA, are allowed to react with atoms from an element, in group VIIA. What type of compound is likely to form? The element's symbol: N 1. One atom of the element above contains a. ___ protons b. ___ neutrons c. ___ electrons d. ___ atomic ma...
Aluminium is a reactive metal and cannot be extracted from its ore, bauxite (Al2O3), through reduction with carbon. Instead it is extracted by electrolysis – the metal is oxidized in solution and then reduced again to the pure metal. The ore must be in a liquid state for this to ...
Atomic Volume 4,6cm3/mol Crystal Structure Rhombohedral Electron Configuration 1s2 2s2 p1 Ionic Radius: 0,23Å Number of Electrons: 5 Number of Neutrons: 6 Number of Protons: 5 Valence Electrons: 2s2 p 1 CHEMICAL PROPERTIES Electrochemical Equivalent: 0,1344g/amp-hr Electronegativity (Pauling...
Fluorine is the most active chemical element, reacting with virtually every element. It even reacts with the noble gases at high temperatures and pressures. The noble gases, or Group 18 (VIIIA), also known as the inert gases, generally do not react with other elements. Fluorine was discove...
Iridium metal is silvery-white with a density of 22.65 grams per cubic centimeter. A cubic centimeter of iridium weighs 22.65 times as much as a cubic centimeter of water. It is the most dense element known. Iridium has a melting point of 2,443°C (4,429°F) and a boiling point of ...
What is the element with symbol Xe? Elements: The substances that comprises of many atoms with equal number of protons are referred as elements. The combination of many blocks of atoms results in the formation of element. Every element has unique characteristics property. ...
What element is a metal with 4 electrons in its outer shell? What does isoelectronic mean in chemistry? What is the ground-state electron configuration of tellurium? What is the number of protons in zinc? What is the atomic number of indium?