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Unit 3- Periodic table and trends

Horizontales
An element, such as silicon or germanium, that has physical and chemical properties of both metals and nonmetals
Measure of the size of its atoms
Indicated the relative ability of an elements atoms to attract electrons in a chemical bond
Elements that are generally gases or dull, brittle solids that are poor conductors of heat and electricity
An ion that has a negative charge
States that a maximum of two electrons may occupy a single atomic orbital, they must have opposite spins
States that each electron occupies the lowest energy orbital possible
The lowest allowable energy state of an atom
A column of elements in the periodic table of chemical elements
Horizontal row of elements in the modern periodic table
Verticales
The arrangement of electrons in an atom-three rules: 1. Aufbau's principle 2. Pauli exclusion principle 3. Hund's rule
Areas within sub-levels where electrons are found
The tendency of a substance to undergo a chemical reaction
The fixed amount of _____ that a system described by quantum mechanics can have
An ion made up of two or more atoms bonded together that acts as a single unit with a net charge
The energy required to move an electron from a gaseous atom; generally increases in moving from left to right across a period and decreases in moving down a group
A vertical column of elements in a periodic table; also called family
An element that is solid at room temperature, a good conductor of hear and electricity, and generally is shiny; most metals are ductile
An ion that has a positive charge
States that single electrons with the same spin must occupy each equal energy orbital before additional electrons with opposite spins can occupy that orbital
States that atoms lose, gain, or share electrons in order to acquire a full set of eight valence electrons