WebIf helium is in group 8 why does it not have 8 valence electrons . And when two hydrogen atoms combine they make a molecule and then have a total of 2 valence electrons if they are then stable then why are the elements in group 2 not stable with 2 valence electrons ? • ( 13 votes) Upvote Flag Just Keith 8 years ago WebFor coordination complexes containing transition metals, the valence shell consists of 18 electrons. This is referred to as the eighteen electron rule. Possible number of electrons …
Electronic structure - The atom - GCSE Chemistry (Single Science …
Webevery orbital can hold only 2 electrons. and one of the electrons have up spin and the other down spin. and the number of orbitals in a shell is given by n^2 where n is the shell number. • ( 4 votes) Just Keith 8 years ago Yes, everything you said is correct. Although, strictly speaking, "spin up" and "spin down" are not official terms. WebThe number of electrons in each element’s electron shells, particularly the outermost valence shell, is the primary factor in determining its chemical bonding behavior. In the periodic table, the elements are listed in order of increasing atomic number Z. Electron configuration of Yttrium is [Kr] 4d1 5s2. Possible oxidation states are +3. know my name chanel miller chapter summaries
What are the maximum number of electrons in each shell?
WebSub-shells contain different numbers of orbitals, which are regions of space where an electron can be found 95 percent of the time. Orbitals can only hold a maximum of two electrons and have different shapes. Electrons fill shells, sub-shells and orbitals in a certain order, known as an element’s electron configuration. WebIn total it has thirty-nine electrons. Its electron configuration is as follows: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d1 This is a much simpler and more efficient way to portray electron configuration of an atom. A logical way of thinking about it is that all that is required is to fill orbitals across a period and through orbital blocks. WebElectron shells consist of one or more subshells, and subshells consist of one or more atomic orbitals. Electrons in the same subshell have the same energy, while electrons in different shells or subshells have different energies. Created by Sal Khan. Sort by: Top Voted Questions Tips & Thanks ashikari123 12 years ago know my net speed