## Ground State

905092269
Posts: 32
Joined: Fri Sep 28, 2018 12:29 am

### Ground State

What is the ground state and how do you find it? How would I find the answer to 2A.9: Which M3+ ions (where M is a metal) are predicted to have the following ground-state electron configurations?(a) [Ar]3d^7, (b) [Ar]3d^6, (c) [Kr]4d^4, (d) [Kr]4d^3?

Tatum Keichline 2B
Posts: 64
Joined: Fri Sep 28, 2018 12:26 am

### Re: Ground State

Ground state would be the lowest energy state of the atom. So the electron configuration has to show the lowest energy state.

becca_vandyke_4b
Posts: 30
Joined: Fri Sep 28, 2018 12:29 am

### Re: Ground State

you find the ground state by looking at the periodic table and seeing where the element falls and what s, p, or d orbitals it already fills. And then to get the 3+ charge you take away three electrons from the ground state.

Ethan Breaux 2F
Posts: 63
Joined: Sat Sep 29, 2018 12:16 am

### Re: Ground State

So would the answer be [Ar]3d6?

Posts: 60
Joined: Fri Sep 28, 2018 12:19 am

### Re: Ground State

It also means configurations follow principles like building-up principle(Aufbau), where the electrons don't jump energy levels.

taiyeojeikere-3C
Posts: 30
Joined: Fri Sep 28, 2018 12:26 am

### Re: Ground State

So when looking for the ground state and given a electron such as s2-, I remove two electrons from the last energy level to get the ground state configuration?

Soyoung Park 1H
Posts: 30
Joined: Sat Sep 29, 2018 12:15 am

### Re: Ground State

What does having lowest energy e- configuration mean exactly?