Web19 aug. 2024 · The name of a monatomic anion consists of the stem of the element … Web5 apr. 2024 · Hence the ionic charge of Selenium (Se) is 2-. Note: The blank area shown in the above periodic table are mostly the transition and post-transition elements. They show variable ionic charge. Hence we cannot find their ionic charge by simply looking at the periodic table. In order to find the charge of these elements, we need to look at what it ...
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Web30 dec. 2024 · Selenium has a Heat of Vaporization of 37.7 kJ/mol. Uses Light causes it to conduct electricity more easily. It is used in photoelectric cells, TV cameras, xerography machines and as a semiconductor in solar batteries and rectifiers. Also colors glass red. Sources Obtained from lead, copper and nickel refining. Web25 mrt. 2011 · The selenide ion has the same electron configuration as (or is 'iso-electronic' to) Krypton:There are 8 electrons in its 4th shell (4th energy level: 4s and 4p are fully filled)Se2-= 1s2, 2s2 2p6 ... reading recycle centre opening times
Hoe het verschil tussen een atoom en een ion te begrijpen?
Web21 nov. 2024 · An atom of Selenium in the gas phase, for example, gives off energy when it gains an electron to form an ion of Selenium. Se + e – → Se – – ∆H = Affinity = 195 kJ/mol. To use electron affinities properly, it is essential to keep track of sign. When an electron is added to a neutral atom, energy is released. WebIons are single charged atoms (simple ions) or small charged “molecules” (polyatomic ions).” Simple ions include Na +, Ca 2+, and Cl –. Polyatomic ions include (NH 4) +, (CO 3) 2-, and OH –. Unlike protons and neutrons, electrons … Web18 jul. 2024 · An atom of an element is most stable when its outer electron shell is … reading recycle centre