Unit 4 Vocab

________: elements that border the line between metals and nonmetals, usually shaded green.

________: appear below the main body of the periodic table, characterized by f orbitals that contain electrons and generally also have electrons in highest occupied s sublevel.

________: ion with a negative charge, always larger than atom it forms from.

________: elements in upper- right corner, most gases and a few solids (sulfur and phosphorous) and only bromine is liquid, poor conductors of heat and electric current (except carbon), often brittle and shatter if hammered.

________: Group 7A nonmetals, includes general class of compounds called salts, very reactive.

________: ability of an atom to attract electrons when the atom is in a compound, calculated using factors like ionization energy.

________: an ion with a positive charge, always smaller than the atom it forms from.

________: Group B elements that are usually displayed in main body of a periodic table (e.g.

________: an atom or group of atoms that has a positive or negative charge, not neutral, formed when electrons are transferred between atoms.

________: when elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties.

________: elements in Group 8A of periodic table, aka inert gases, quite stable and rarely in reactions (s and p sublevels completely filled)

Group 1A metals

Group 2A metals

ion with a negative charge, always larger than atom it forms from

one half the distance between the nuclei of two atoms of the same element when the atoms are joined, expresses size of atoms

an ion with a positive charge, always smaller than the atom it forms from

ability of an atom to attract electrons when the atom is in a compound, calculated using factors like ionization energy

Group 7A nonmetals, includes general class of compounds called salts, very reactive

appear below the main body of the periodic table, characterized by f orbitals that contain electrons and generally also have electrons in highest occupied s sublevel

an atom or group of atoms that has a positive or negative charge, not neutral, formed when electrons are transferred between atoms

the energy required to remove an electron from an atom, measured when an element is in its gaseous state

elements that border the line between metals and nonmetals, usually shaded green

80% of the periodic table, good conductors of heat and electric current, high luster/sheen due to ability to reflect light, ductile, malleable, solid at room temperature except mercury (Hg)

elements in Group 8A of periodic table, aka inert gases, quite stable and rarely in reactions (s and p sublevels completely filled)

elements in upper-right corner, most gases and a few solids (sulfur and phosphorous) and only bromine is liquid, poor conductors of heat and electric current (except carbon), often brittle and shatter if hammered

when elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties

elements in Groups IA-7A, so-called as they display a wide range of physical/chemical properties (metals, non-metals, or metalloids), most solids but few gases at room temperature and one (bromine) is liquid, s and p sublevels of highest occupied energy level are not filled

Group B elements that are usually displayed in main body of a periodic table (e.g