Quantum Chemistry Vocabulary

Periodic Trends

100

This property is the ability an element has to attract an electron.

What is electronegativity?

200

This is the energy released when an atom gains electron.

What is electron affinity?

300

This is the distance from the center of the nucleus to the outermost energy level of an atom. 

What is atomic radius?

400

This is the amount of energy required to remove an electron from an atom. 

What is ionization energy?

500

This physical property increases from right to left on the periodic table. 

Metallic property. 

QuantumChemistry

100

These are the outermost electrons orbiting the nucleus of an atom. 

What are valence electrons?

200

These are regions of space around the nucleus where an electron is most likely to be found. 

What are orbitals?

300

Electron orbitals can be broken further down into these.

What are sub-shells?

400

This is the written description of the orientation of electrons within an atom. 

What is the electron configuration? 

500

This is the remaining charge of an atom following the addition or removal of electrons. 

What is the oxidation number?

Chemical Families

100

This group of elements conducts electricity well. 

What are metals?

200

This group of elements are so reactive they are only found in compounds in nature. 

What are alkali metals?

300

This group of elements are unreactive, or inert, gasses. 

What are the noble gasses?

400

This group of elements are in group 7 of the periodic table. 

What are the halogens?

500

This group of elements can conduct electricity under certain environmental conditions.

What are metalloids?