WebOct 1, 2024 · The selenium group number - 16 (or VIa) - is also known as the oxygen group or chalcogen group of the periodic table. Other chemical elements that belong to the chalcogen group include: Oxygen... WebDec 8, 2024 · Selenium-78 is composed of 34 protons, 44 neutrons, and 34 electrons. Selenium-79 is composed of 34 protons, 45 neutrons, and 34 electrons. Selenium-80 is composed of 34 protons, 46 neutrons, and 34 electrons. Selenium-82 is composed of 34 …

Selenium – Protons – Neutrons – Electrons – Electron Configuration

http://www.chemicalelements.com/elements/se.html Web13 rows · Mar 27, 2024 · The atomic number of an element is equal to the number of protons and electrons in that ... skull with horns outline

Selenium – Protons – Neutrons – Electrons – Electron …

WebSelenium Se Element 34 Mass Number: 79 Atomic weight: 78.97 g/mol Atomic number (Z): 34 Electrons: 34 Protons: 34 Neutrons: 45 Period: 4 Group: 16 Block: p WebSelenium is a necessary trace element in living organisms. Since selenium was first discovered, it has caused widespread concern [].From the synthetic application of selenium-containing compounds to the synthesis of selenium-containing polymers by various polymerization methods, after years of exploration and development, the foundation for … WebNov 11, 2024 · Electronegativity of Selenium is 2.55. Electronegativity, symbol χ, is a chemical property that describes the tendency of an atom to attract electrons towards this atom. ... Hydrogen is a chemical element with atomic number 1 which means there are 1 protons and 1 electrons in the ... Caesium is a chemical element with atomic number 55 … swatch sloane