# Electron Configurations in excited states

by viper2308
Tags: configurations, electron, states
 P: 20 1. The problem statement, all variables and given/known data Which of the following electron configurations correspond to an excited state? Identify the atoms and write the ground-state electron configuration where appropriate. 1s2 2s2 2p4 3s1 [Ar]4s2 3d5 4p1 2. Relevant equations none 3. The attempt at a solution I have no idea what to do. I was able to get 1s2 2s2 3p1 is boron but that is only because I thought it said 1s2 2s2 2p1
 P: 133 put the last electron back into the previous orbital, - this will give you the ground state. count the total number of electrons, check the periodic table and this will give you the element
 P: 1 well, none of those.. ==ground state includes the sub-orbitals of "p", which are: Px,Py,Pz (Well, x,y,and z are supposed to be subscripts and p is in lowercase.) ==it should be: z=26(right?!) [Ar] 4s2 3d5 4p1 = 1s2 2s2 2p6 3s2 3p6 4s2 3d5 4p1 ==1s2 2s2 2p6 3s2 3p6 4s2 3d5 4px1 4py 4pz ==excited state is more elaborate... ==there...that's it dude.. ==well, i suppose you know what's the correct answer,,, ==you've posted a trivia.. ==well,,tc:)
P: 21,675

## Electron Configurations in excited states

Count the electrons - that will give you total number of electrons and you will know what element you see.

Write - using Aufbau principle - ground state configuration.

Compare - if it is different, you are excited

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