Which of these elements has an atom with the most stable outer electron configuration? 1.Br 2.Ne 3.Zn 4.Ag

Ne

Explanation:

Neon is the element with the most stable outer electron configuration because it has eight valence electrons that fill the outer shell. Eight electrons in the outer shell is the most stable arrangement of electrons. Neon is also a noble gas which means that due to it already having a complete outer shell, it doesn't lose, gain, or share electrons. Therefore, it is stable.

Hope that helps.

it should be all of them because it asks if you included all of those in your answer

explanation:

c. 75.7

i think that is the right