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atomic orbital
a mathematical expression describing the probability of finding an electron at various locations around the nucleus
aufbau principle
says electrons occupy the orbitals of lowest energy first
electron configurations
the ways in which electrons are arranged in various orbitals around the nuclei of atoms
ground state
the state an electron has its lowest possible energy
pauli exclusion principle
says an atomic orbital may describe at most two electrons
heisenberg uncertainty principle
states that is impossible to know both the velocity and the position of a particle at the same time
electronegativity
the ability of an atom of an element to attract electrons when the atom is in a compound
ionization energy
the energy required to remove an electron from an atom
atomic radius
one half of the distance between the nuclei of two atoms of the same element when the atoms are joined
metal
generally good conductors of heat and electric current
transition metal
group b elements that are usually displayed in the main body of the periodic table
periodic law
when elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties
atomic mass
a weighted average mass of the atoms in a naturally occurring sample of the element
period
the horizontal rows of the periodic table
group
each vertical column of the periodic table
electron
negatively charged subatomic particles
in bohrs model of the atom, where are the electrons and protons located?
the electrons move around the protons, which are at the center of the atom
the principle quantum number indicates what property of an electron?
energy level
what is the shape of the 3p atomic orbital?
dumbbell
what is the maximum number of f orbitals in any single energy level in an atom?
7
what is the maximum number of d orbitals in a principle energy level?
5
what is the maximum number of orbitals in the p sub level?
3
what is the maximum number of electrons in the second principle energy level?
8
if the spin of one electron in an orbital is clockwise, what is the spin of the other electron?
counterclockwise
what types of atomic orbitals are in the third principle energy level?
s, p, and d only
if 3 electrons are available to fill 3 empty 2p atomic orbitals, how will the electrons be distributed in the 3 orbitals?
one electron in each orbital
according to the aufbau principleā¦
electrons enter orbitals of lowest energy first
stable electron configurations are likely to containā¦
filled energy sublevels
emission of light from an atom occurs when an electronā¦
drops from a higher to a lower energy level
what is the quanta of light called?
photons
which scientist developed the quantum mechanical model of the atom?
erwin schrƶdinger
the quantum mechanical of the atomā¦
involves the probability of finding an electron in a certain position
which of the following elements is in the same period as phosphorus?
magnesium
each period in the periodic table corresponds to aā¦
principle energy level
the modern periodic table is arranged in order of increasing atomicā¦
number
who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
dmitri mendeleev
which of the following categories includes the majority of elements?
metals
to what category of elements does an element belong if it is a poor conductor of electricity?
nonmetals
the atomic number of an element is the total number of which particles in the nucleus?
protons
which is the following is true about electron configurations of the noble gases?
the highest s and p sublevels are completely filled
which of the following elements in a transition metal?
copper
how does atomic radius change from top to bottom in a group in the periodic table?
it tends to increase
how does atomic radius change from left to right across a period in the periodic table?
it tends to decrease
atomic size generallyā¦
decreases as you move from left to right across a period
which of the following statements is true about ions? (#1)
cations form when an atom loses electrons
which of the following statements is true about ions? (#2)
when anions form, more electrons are transferred to it
as you move from left to right across the second period of the periodic tableā¦
ionization energy increases
Note 
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