trends in atomic size
Terms in this set (19)
one half the distance between the nuclei of two atoms of the same element that are joined
In general increases from top to bottom within a group, and decreases from left to right across a period.
Group trends in atomic size
as the atomic number increases within a group the charge on the nucleus increases and the number of occupied energy levels increases.
Period trends in atomic size
within increasing atomic number, each element has one or more proton and one more electron than the preceding element.
an atom or a group of atoms that has a positive or negative charge.
an ion with a positive charge
an ion with a negative charge.
the force of attraction between an electron and the nucleus
the electron in the lowest energy levels shield the electrons from the outer levels from the full force of the nucleus
effective nuclear charge
nuclear charge felt by an electron
across a period the effective nuclear charge_______ from left to right
down a group the effective nuclear charge _______ from top to bottom
electrons shield the valence electrons
the units for atomic radius
the equation of coulomic attraction on the distance is a _______ relationship with the force.
The Charge has a_________ relationship with the force
the ability of an atom of an element to attract electrons when the atom is in a compound.
Electronegativity values ______ from top to bottom within a group for representative elements.
electronegativity _________ from left to right across a period