WebOct 28, 2008 · Se has 6 valence electrons, but if you add the ion Se2- you're going to be gaining 2 electrons, in which you'll have 8 valence electrons. In A reaction atoms with how many valence... WebUsually, though there are a few exceptions, this means elements need eight electrons in their outside energy level. So, the most succinct answer to your question is that they need to gain enough electrons to have eight in the valence level. However, please note this doesn’t make them a noble gas!

3.5: Ionic Bonding: Using the Periodic Table to ... - Chemistry …

WebSep 5, 2024 · This atom of selenium has 34 protons, 45 neutrons, and 36 electrons. The atomic number of an element gives the number of protons found in the nucleus of each … WebSecondary electrons are electrons generated as ionization products. They are called 'secondary' because they are generated by other radiation (the primary radiation). This … bj\\u0027s walnut street cary nc

Exceptions to the Octet Rule Boundless Chemistry Course Hero

Webe−. or. β−. ) is a subatomic particle with a negative one elementary electric charge. [13] Electrons belong to the first generation of the lepton particle family, [14] and are generally thought to be elementary particles because … Weboctet rule: Atoms lose, gain, or share electrons in order to have a full valence shell of eight electrons. Hydrogen is an exception because it can hold a maximum of two electrons in its valence level. Free Radicals Some elements, most notably nitrogen, can form compounds that do not obey the octet rule. WebThey can gain one electron and become 1–. Group 16 elements gain two electrons to become 2–, and Group 15 elements gain three electrons to become 3–. All the remaining metal elements produce at least one ion with a charge of 2+. Some elements can form ions with two or more different charges. dating testimonials