Electron Configuration

Question 1

How many electrons in each orbitals?

Answer 1

2

Question 2

How do electrons fill each orbital?

Answer 2

Electrons will fill the lowest available energy (stepwise fashion)

Question 3

How many electrons in each sub shell?

Answer 3

The 𝑠 subshell has one orbital for a total of 2 electrons
The 𝑝 subshell has three orbitals for a total of 6 electrons
The 𝑑 subshell has five orbitals for a total of 10 electrons
The 𝑓 subshell has seven orbitals for a total of 14 electrons
The 𝑔 subshell has nine orbitals for a total of 18 electrons
The ℎ subshell has eleven orbitals for a total of 22 electrons

Question 4

which orbitals appear in each sub shell

Answer 4

Each energy level (shell) has more subshells available to it:

The first shell only has the 𝑠 subshell ⟹ 2 electrons
The second shell has the 𝑠 and 𝑝 subshells ⟹ 2 + 6 = 8 electrons
The third shell has the 𝑠, 𝑝, and 𝑑 subshells ⟹ 2 + 6 + 10 = 18 electrons
The fourth shell has the 𝑠, 𝑝, 𝑑, and 𝑓 subshells ⟹ 2 + 6 + 10 + 14 = 32 electrons
The fifth shell has the 𝑠, 𝑝, 𝑑, 𝑓, and 𝑔 subshells ⟹ 2 + 6 + 10 + 14 + 18 = 50 electrons
The sixth shell has the 𝑠, 𝑝, 𝑑, 𝑓, 𝑔, and ℎ subshells ⟹ 2 + 6 + 10 + 14 + 18 + 22 = 72 electrons
The pattern is thus: 2,8,18,32,50,72,… or 2𝑛2

Question 5

What is the Aufbau principle and how does it work? draw it?

Answer 5

The way electrons will fill orbitals.

Question 6

What is the noble gas configuration?

Answer 6

it is a shorthand where the noble gas from the row above is used in place of the prior configuration (making the configuration simpler to read)