Explanation: For oxygen, Z=8 , and thus O2− has a configuration of: 1s22s22p6 , i.e. 10 electrons distributed.

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In oxide, oxygen has two extra electrons to have octet stable state. So, electronic configuration of oxide ion is: 1s2, 2s2 2p6. We know the general electronic configuration of Oxygen (O)= 1s2, 2s2, 2p4.
for O2− , which is the same electron configuration as Ne . That is known as a noble-gas-like configuration, and in general it is stable if oxygen is like that in a compound (having 8 electrons in its 2s and 2p orbitals combined). Oct 26, 2016
Oxygen, O. Oxygen is in Group 6. It has six electrons in its outer shell. It gains two electrons from one or two other atoms in reactions, forming an oxide ion, O 2 -.
The ground state electron configuration is the arrangement of electrons around the nucleus of an atom with lower energy levels. The electrons occupying the orbitals of varying energy levels naturally falls towards the lowest energy state or ground state. Dec 16, 2015
The ground state electron configuration of ground state gaseous neutral phosphorus is . 3s2. 3p3 and the term symbol is 4S3 / 2.
Oxygen atom has 8 electrons and O 2 - ion will thus have 8 + 2 = 10 electrons. Thus, it has an electronic configurations of 1s 22s22p6 and is NOT isoelectronic with H 2S. Apr 2, 2014
Gallium(3+) is a monoatomic trication derived from gallium. ... 4.3Related Element. Element Name Gallium Element Symbol Ga Atomic Number 31
An orbital filling diagram is the more visual way to represent the arrangement of all the electrons in a particular atom. In an orbital filling diagram, the individual orbitals are shown as circles (or squares) and orbitals within a sublevel are drawn next to each other horizontally.
The correct answer is Ga3+. So the electron configuration of Sc3+ is like that of Ar. The presence of the ten d orbital electrons prevents Ga3+ from having the same electron configuration as Argon. All other choices have the same electron configurations as a noble gas. Nov 23, 2018
antimony So, an antimony atom with charge +2 has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1.

See more: The Minimum Energy Required To Start A Reaction Is:, Activation Energy

neon Electron Configuration Match 2 -- Core Configurations A B carbon 2s2 2p2 nitrogen 2s2 2p3 oxygen 2s2 2p4 neon 2s2 2p6 16 more rows
Aluminum Electron Configurations A B Magnesium 1s2 2s2 2p6 3s2 Aluminum 1s2 2s2 2p6 3s2 3p1 Sulfur 1s2 2s2 2p6 3s2 3p4 Chlorine 1s2 2s2 2p6 3s2 3p5 16 more rows
It would tend to gain one electron and form a -1 ion. Aluminum is in the fifth column and therefore has 5 electrons in its outermost shell. It would tend to lose three electrons and form a +3 ion.