Answer to Question #173852 in General Chemistry for Dawson

Question #173852

Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by Br.

1
Expert's answer
2021-03-22T07:56:40-0400

We know that Br lies in 17 group and 4 th period of periodic table .

Its atomic number is 35

Its ground state electronic configuration is

"1s^2,2s^2p^6,3s^23p^63d^{10},4s^24p^5"

In its valence shell it has 7 electron .

It will accept one electron and form Br-1 ion

after forming this monoatomic ion it will attain electronic configuration of its noble gas Krypton.

so its electronic configuration become

"1s^2,2s^2p^6,3s^23p^63d^{10},4s^24p^6"

so electronic configuration of its most like stable monoatomic ion

"Br^{-1}=1s^2,2s^2p^6,3s^23p^63d^{10},4s^24p^6"


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