[Ar] 4s2 3d9
I am assuming that the question is for Co2+ ion. and the answer is [Ar] 3d5 4s2
The noble gas notation is a notation formed as a result of the electron configuration notation being used in conjunction with noble gases. The noble gas preceding the element in question is written then the electron configuration is continued from that point forward. The notation is shorter to write and makes it easier to identify elements. The noble gas notation starts for elements after helium. For example, the electronic configuration of carbon is 1s2 2s2 2p2, whereas its noble gas notation is [He] 2s2 2p2.
Br - 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5The noble gas notation form isBr- [Ar] 4s2 3d10 4p5Br- ion has 36 electrons and has the same electronic configuration as the noble gas krypton.Its noble gas notation is [Ar] 3d10 4s2 4p6
calcium is normally [Ar] 4s2 if it is a 2+ ion, then it has lost 2 electrons so the configuration is just [Ar]
When phosphorus achieves a noble gas configuration, it gains three electrons to become the phosphide ion (P³⁻). This allows it to achieve the stable electron configuration of a noble gas, similar to argon.
S2- ion: [Ne]3s23p6
I am assuming that the question is for Co2+ ion. and the answer is [Ar] 3d5 4s2
The noble gas notation is a notation formed as a result of the electron configuration notation being used in conjunction with noble gases. The noble gas preceding the element in question is written then the electron configuration is continued from that point forward. The notation is shorter to write and makes it easier to identify elements. The noble gas notation starts for elements after helium. For example, the electronic configuration of carbon is 1s2 2s2 2p2, whereas its noble gas notation is [He] 2s2 2p2.
Br - 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5The noble gas notation form isBr- [Ar] 4s2 3d10 4p5Br- ion has 36 electrons and has the same electronic configuration as the noble gas krypton.Its noble gas notation is [Ar] 3d10 4s2 4p6
calcium is normally [Ar] 4s2 if it is a 2+ ion, then it has lost 2 electrons so the configuration is just [Ar]
When phosphorus achieves a noble gas configuration, it gains three electrons to become the phosphide ion (P³⁻). This allows it to achieve the stable electron configuration of a noble gas, similar to argon.
P 3- is the ion with the noble gas configuration.
The charge of a sulfide ion that is isoelectric with its nearest noble gas (argon) is -2. This means that the sulfide ion has gained two electrons in order to have the same electron configuration as the noble gas.
The noble gas that is isoelectronic with an aluminum ion is neon. Both the aluminum ion (Al^3+) and neon have 10 electrons.
Oxide ion (O²⁻) has the electron configuration of a noble gas neon (Ne), which is 1s² 2s² 2p⁶.
The noble gas that is isoelectronic with the oxide ion O2 is neon (Ne). Both the oxide ion O2 and the neon atom have 10 electrons.
P3- or phosphide ion is formed. it has the same number of electrons as the noble gas, argon