polyatomic ion
a group of covalently bonded atoms that function as a whole and had either a surplus or deficit
of electrons, giving it a pos/neg charge
noble gasses
p-block elements of groups 18 on the periodic table
octet
The eight electrons in s and p sublevels, which complete to outer shell of an atom & make the
element very stable & chemically nonreactiive
electron affinity
The amount of energy released when a neutral atom gains an electron to become an anon
ionization energy
The energy required to remove an electron from a neutral atom or ion
conductivity
A metallic property; the ability of a substance to conduct heat or electricity
monatomic ion
a positive or negantive ion consisting of only one ion
Lattice energy
/the energy released when one mole of an ionic compound is formed
Electronegativity
The amount of the ability of an atom of one element to attract electrons from an atom of one
element to form a compound
alkaline-earth metals
s-block elements in group 2 of the periodic table
actinides
radioactive f-block elements with atomic numbers 90 through 103
tetrahedtral
a molecular geometric model in which the central atom is surrounded by 4 atoms that form the
vertices of a geometric figure with a triangula
trigonal planar
A molecular geometric model in which a central atom is surrounded by 3 atoms that form the
vertices of an equilateral triangle; in 1 plane
London dispersion forces
Intermolecular forces created by temporary dipoles that result from the movement of
electrons in the atoms within molocules
ductility
Is a metallic property; the ability of a substance to be drawn, pulled, stretched or extruded
into wire
metalloids
p-block elements that are not malleable as metals, not as brittle as nonmetals, and will
conduct electricity under certain conditions
luster
Is a metallic property; the ability to shine by reflecting light
ionic radius
The measure of the size of an ion
malleability
is a metallic property; the ability of a substance to be shaped, hammered, or beaten into thin
sheets
bond energy
is the energy released to break a chemical bond and form neutral atoms
formula unit
The simplest chemical unit of an ionic compound
alkali metals
s-block elements in group 1 of the periodic table
molecular geometry
The three-dimensional arrangement of the atoms within a molecule
molecule
A group of atoms with a neutral charge that are held together by covalent bonds
halogens
p-block elements in group 17 of the periodic table
transition elements
d-block elements in groups 3 through 12 of the periodic table
lanthanides
are metallic f-block elements with numbers 58 through 71
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