Web24 sep. 2024 · Answer: 34 protons, 34 electrons, and 45 neutrons Explanation: Let's examine a periodic table. Locate where selenium is (see attachment). First, the number of protons is represented by the atomic number, which is the whole number above the chemical formula, which is Se for selenium. We see it is 34, so there are 34 protons. WebSelenium is a chemical element with atomic number 34 which means there are 34 protons and 34 electrons in the atomic structure. The chemical symbol for Selenium is Se. Selenium is a nonmetal with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.
Chemical Elements.com - Selenium (Se)
WebThe concept that atoms play a fundamental role in chemistry is formalized by the modern. atomic theory. , first stated by John Dalton, an English scientist, in 1808. It consists of three parts: All matter is composed of atoms. Atoms of the same element are the same; atoms of different elements are different. WebHow many protons and neutrons are there in a selenium-75 atom? protons neutrons (2) When the nuclide selenium-75 decays as indicated on the table: the number of protons in the product nuclide is: the number of neutrons in the product nuclide is: the name of the product nuclide is Expert Answer nj employer unemployment wage base
Answered: How many protons, neutrons, and… bartleby
WebAbout Selenium-77 Isotope. Selenium 77 Metal (Selenium-77) is a stable (non-radioactive) isotope of Selenium. It is both naturally occurring and produced by fission. Selenium 77 Metal is one of over 250 stable metallic isotopes produced by American Elements for biological and biomedical labeling, as target materials and other applications. Web5 mrt. 2024 · Instructions • • Use black ink or ball-point pen. Fill in the boxes at the top of this page with your name, • centre number and candidate number. • Answer all questions. Answer the questions in the spaces provided • – there may be more space than you need. • Show all the steps in any calculations and state the units. Some questions must be … WebSelenium is a nonmetal element, belongs to group 16 of the periodic table. Multiple allotropic forms of selenium exist. This element resembles sulphur chemically. … nj estimated tax payment history