Electron Basics
Electron Configurations
Count the Electrons
Lewis Dot Structures
Electromagnetic Spectrum
Energy and Light
200

This negatively charged particle occupies the space surrounding an atom’s nucleus.

What is an electron?

200

This is the number of electrons represented by 1s22s22p2.

What is six?

200

A neutral sodium atom has this many valence electrons.

What is one?

200

This many dots appear in the Lewis symbol for carbon.

What is four?

200

All electromagnetic waves travel at this speed in a vacuum.

What is 3.00×108 m/s?

200

An electron must do this to move to a higher energy level.

What is absorb energy?

400

This term describes an atom in its lowest-energy condition.

What is the ground state?

400

The configuration 1s22s22p2 represents this element.

What is carbon?

400

The configuration 1s22s22p63s23p3 contains this many valence electrons.

What is five?

400

This many dots appear in the Lewis symbol for oxygen.

What is six?

400

This term describes the distance from one wave crest to the next.

What is wavelength?

400

An electron releases this when it falls to a lower energy level.

What is a photon?

600

An electron enters this state after absorbing energy and moving farther from the nucleus.

What is an excited state?

600

The configuration 1s22s22p63s23p1 represents this element.  

What is aluminum?

600

The configuration 1s22s22p63s23p3 contains this many occupied principal energy levels.

What is three?

600

This many dots appear in the Lewis symbol for chlorine.

What is seven?

600

This term describes the number of wave cycles passing a point each second.

What is frequency?

600

Between red and blue-violet light, this color has photons with more energy.

What is blue-violet?

800

These electrons occupy an atom’s highest occupied energy level.

What are valence electrons?

800

The noble-gas configuration [Ne]3s23p4 represents this element.

What is sulfur?

800

This is the shell distribution for bromine’s 35 electrons.

What is 2, 8, 18, 7?

800

The dots in a Lewis symbol represent these electrons.

What are valence electrons?

800

These electromagnetic waves have the longest wavelengths.

What are radio waves?

800

This pattern of colored lines forms when excited atoms release light.

What is an atomic emission spectrum?

1000

This is the maximum number of electrons that can occupy one orbital.

What is two?

1000

The noble-gas configuration [Ar]4s23d104p3 represents this element.

What is arsenic?

1000

The configuration [Ar]4s23d104p  represents this many electrons.

What is 34?

1000

Before any dots pair, the first four dots occupy these locations around an element symbol.

What are the four separate sides?

1000

These electromagnetic waves have the highest frequencies and energies.

What are gamma rays?

1000

Scientists can identify an element from its emission spectrum because every element has this.

What is a unique pattern of spectral lines?