Respuesta :
Atomic number of bromine is: 35
The electronic configuration of bromine is:
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁵.
To represent this in noble gas notation then ,
1s² 2s² 2p⁶ 3s² 3p⁶ corresponds to 18 atomic number that is of Argon, so it can be represented as [Ar]
The electronic configuration of bromine using the noble-gas shorthand notation is [Ar] 3d¹⁰ 4s² 4p⁵.
Answer: [tex]Br:35:[Ar]4s^23d^{10}4p^5[/tex]
Explanation:
Electronic configuration represents the total number of electrons that a neutral element contains. We add all the superscripts to know the number of electrons in an atom.
The electrons are filled according to Afbau's rule in order of increasing energies and thus the electronic configuration for bromine with atomic number of 35 and thus containing 35 electrons is:
[tex]Br:35:1s^22s^22p^63s^23p^64s^23d^{10}4p^5[/tex]
The nearest noble gas is Argon with 18 electrons and thus electronic configuration for bromine in terms of noble gas is:
[tex]Br:35:[Ar]4s^23d^{10}4p^5[/tex]
