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Terms in this set (23)
Which subatomic particles are free to move in metallic bonding?
Combined, they're better than the elements that make them up
Why are alloys so valuable?
conductors, shiny, malleable, ductile
What are some common characteristics of metals?
When elements form compounds, they tend to achieve noble gas configuration.
What is the octet rule?
Positively charged ions by the loss of electrons. They keep their name.
What are cations? How are they formed? How are they named?
Holds ions together oppositely charged ions. Holds together cations and anions.
What is an ionic bond? Which categories of elements form these bonds?
The lowest whole number ratio.
What is a formula unit?
Mixtures of two or more elements, at least one of which is a metal -- steel.
What is an alloy? What is the most useful alloy?
Their properties are often superior to those of their component elements.
Why are alloys important?
Crystalline solid at room temperature.
High melting point.
Can conduct electric current when melted or dissolved in water.
What are some common characteristics of ionic compounds?
The number of ions of opposite charge that surround the ion in a crystal.
What is the coordination number?
The forces of attraction between the free-floating valence electrons and positively charged metal ions.
What is a metallic bond?
the electrons in the highest occupied energy level of an element's atoms.
Electron dot structures
diagrams that show valence electrons in the atoms of an element as dots.
in forming compounds, atoms tend to achieve electron configuration of noble gases
the ions produced when atoms of chlorine and other halogens gain electrons
a compound composed of cations and anions
the electrostatic forces that hold ions together in ionic compounds
the number of atoms of each element in the smallest representative unit of a substance
the lowest whole number ration of ions in an ionic compound
the number of ions of opposite charge that surround the ion in a crystal
the forces of attraction between the free-floating valence electrons and the positively charged metal ions
mixtures of two or more elements
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