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The electronic configuration of Br atom is [Ar] 4s2 3d10 4p5. Since, bromide ion has gained 1- charge by acquiring one more electron, its electronic configuration is [Ar] 4s2 3d10 4p6.
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The arrangement of the electrons in an atom is known as its electron configuration.
The electron configuration for an element is the arrangement of electrons in the orbits (or shells ) of a neutral atom. Shells closer to the nucleus have higher binding energ…y. For example, there are eleven electrons in a sodium atom (atomic number 11). Scientists have measured the quantities of energy needed to remove these electrons one by one from a sodium atom. It is quite easy to remove the the first electron. The next 8 are difficult to remove. Finally, it becomes really hard to remove the last two electrons, which are held very powerully because they are the closest to the nucleus. This is just a common representation of electron configuration . --- Example : For an atom of oxygen , there are 8 protons and 8 electrons. The first 2 electrons are in the subshell designated 1s, which can contain 2 electrons. The next 2 are in the shell designated 2s, which can also contain 2 electrons. The final 4 are in the 2p shell, which can contain up to 6 electrons. So the configuration is written as : 1s 2 2s 2 2p 4
The ways electrons are arranged around the nuclei of atoms in various obitals are called electron configurations. See the Related Questions links for more informat…ion
Long-hand version: 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^10 6p^6 7s^2 5f^6 Short-hand version: [Rn] 7s^…2 5f^6 Note: The "^" symbol means the the following number is in the form of a superscript.
Electronic configuration is the arrangement of electrons in the energy levels of an atom.
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p1 is the electron configuration for Indium.
argon is because it's the last noble gas used to get to Br.. it's like a short cut, instead of writing 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^5 you can skip a lot of it …by taking th last noble gas used which is the 3p^6(Ar) and continue from there like so: [Ar] 4s^2 3d^10 4p^5
K+ and Argon Br- and krypton
The correct electron configuration for Helium (He) is 1s2.
The electron configuration for the Bromide anion Br- is as follows: 2s1 2s2 2p6 3s2 3p6 4s2 3d10 4p5.
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 Or 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5 Or [Ar] 4s2 3d10 4p5
The electronic configuration of Br- ion is 1s22s22p63s23p64s23d104p6
Options are not given in the question. But the following species will have the same electronic configuration as Br- ion: Neutral atom: Kr Cations: Rb+, Sr2+ Anion: Se2-