WebExpanded octet (hypervalent): A valence shell electron count that exceeds eight electrons. In methane (CH4), carbon has a full octet (eight valence electrons). In phosphate ion (PO43–), each oxygen has a full octet (eight valence electrons), whereas phosphorus has an expanded octet (ten valence electrons). Which period can expand octet? WebMar 28, 2024 · The octet rule refers to the tendency of atoms to prefer to have eight electrons in the valence shell. When atoms have fewer than eight electrons, they tend …
The periodic table, electron shells, and orbitals - Khan Academy
Web- elements which are stable with fewer than 8 electrons in their valence shell - includes hydrogen (2), helium (2), lithium (2), berrylium (4), boron (6) Define expanded octet. - any element in period 3 or greater that can hold more than 8 electrons in their valence shell - includes phosphorus (10), sulfur (12), chlorine (14), and many many more WebAnswer (1 of 8): The concept of completing shells has some merit as simplistic way of explaining a complex problem but actually it refects ideas that have no basis in reality. It … crystal for safe travel and protection
General Chemistry: Chapter 3 - Bonding and Chemical Interactions - Quizlet
WebJan 28, 2024 · Oxygen has 6 electrons in its outermost shell. However, if you give it a positive charge by removing an electron, then it would only have 5 electrons in its outermost shell. Therefore, it can now from 3 bonds while carrying a positive charge. WebEach shell can contain only a fixed number of electrons: the first shell can hold up to two electrons, the second shell can hold up to eight (2 + 6) electrons, the third shell can hold up to 18 (2 + 6 + 10) and so on. The general formula is that the nth shell can in principle hold up to 2(n2) electrons.[1] WebMay 8, 2024 · The first exception to the Octet Rule is when there are an odd number of valence electrons. An example of this would be Nitrogen (II) Oxide (NO , refer to figure one). Nitrogen has 5 valence electrons while Oxygen has 6. The total would be 11 valence electrons to be used. The Octet Rule for this molecule is fulfilled in the above example ... crystal for safe pregnancy