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Electron Configurations
Principles
Valence Electrons
Energy Levels & Subshells
Miscellaneous Facts
100

What is the electron configuration for carbon?

What is 1s2 2s2 2p2

100

This is the organization of electrons in an atom by energy level and subshells

What is electron configuration

100
How many valence electrons does hydrogen have?
What is 1
100

The s subshell can hold this many electrons

What is 2

100

One electron in an orbital has a clockwise spin.  The second electron in this orbital must have this spin

What is counterclockwise?

200

What is the electron configuration for oxygen?

What is 1s2 2s2 2p4

200

Atoms which fill their s and p subshells are "satisfied" according to this

What is octet rule?

200
How many valence electrons does nitrogen have?
What is 5
200

The p subshell can hold this many electrons

What is 6

200

In order to fill the 3d orbital you must first fill in the ______ orbital

What is 4s orbital

300

1s2 2s2 2p5 is the electron configuration for what element?

What is flourine.

300
Which principle states that each electron occupies the lowest energy orbital available?
What is Aufbau principle
300

How many valence electrons does sodium have?

What is 1?

300

The four subshells are these

What are s, p, d, and f

300

Out of these four energy levels, which one has the most energy: 1s 2d 3d 4s ?

What is 3d

400

1s2 2s2 2p6 3s2 3p6 4s2 is the electron configuration for this element

What is Calcium

400
Which principle states that a maximum of 2 electrons may occupy a single atomic orbital, but only if the electrons have opposite spins?
What is the Pauli exclusion principle
400
How many valence electrons does iodine have?
What is 7
400

The d subshell can hold this many electrons.

What is 10

400

how many electrons can the first energy level hold?

What is 2

500

What is the electron configuration for Mg+2

What is 1s2 2s2 2p6.

500
Which principle states that single electrons with the same spin must occupy each equal-energy orbital before additional electrons with opposite spins occupythe same orbitals?
What is Hund's rule
500

Xenon has this many valence electrons

What is 8

500

After filling the 5 energy levels subshell (5s2), this is the next energy level and subshell.

What is the 4d subshell

500

What is the maximum number of electrons that a 4f subshell can hold?

What is 14