Unit 4 Review - Periodic Table

These flashcards cover key concepts from the Unit 4 review on the Periodic Table, including definitions of terms related to atomic structure, elemental properties, and periodic trends.

Periodic Table

A table that organizes elements by their atomic number, electron configuration, and recurring chemical properties.

Alkali Metals

Group 1 elements on the periodic table, known for their reactivity and having one valence electron.

Noble Gases

Group 18 elements on the periodic table, characterized by their lack of reactivity due to having a full valence shell.

Ionization Energy

The amount of energy required to remove an electron from an atom.

Electronegativity

A measure of the tendency of an atom to attract a bonding pair of electrons.

Atomic Radius

The distance from the nucleus of an atom to the outermost electron shell.

Valence Electrons

Electrons in the outermost shell of an atom that determine its chemical properties.

Isotopes

Atoms of the same element that have the same number of protons but different numbers of neutrons.

Electron Configuration

The distribution of electrons of an atom or ion in atomic or molecular orbits.

Chemical Families

Groups of elements in the periodic table that exhibit similar chemical behavior.

Chemical Notation

A shorthand way to represent elements and compounds using symbols.

Atomic Mass

The weighted average mass of an element's isotopes, measured in atomic mass units (amu).