horizontal row in the periodic table
period
vertical column in the periodic table
group
a repetition of properties occur when elements are arranged in order
periodic table
type of element characterized by the pressure of electrons in the d orbital
transition metal
type of element that is a good conductor of heat and electric current
metal
one half the distance between the nuclei of two atoms when the atoms are joined
atomic radius
type of ion formed by group 2A elements
cation
subatomic particles that are transferred to form positive and negative ions
electron
ability of an atom to atract electrons when the atom is in a compound
electronegativity
energy required to remove an electron from an atom
ionization energy
what is another name for representative elements
A elements
what is another name for the transition metals
b elements
which of the following elements is in the same period as phosphorous
magnesium
each period in the periodic table corresponds to
a principle energy
the modern periodic table is arranged in order of increasing atomic
number
who arranged the elements according to atomic mass and used the arrangement to predict the properties of the missing elements
demiti mendeller
which of the following categories includes the majority of the elememts
metals
of the elements Pt,V,Li and Kr which is a nonmetal
Kr krypton
to what category of elements does an element belong to if it is a poor conductor of electricity
nonmetals
in which of the following sets is the symbol of the element the number of protons and the # of electrons given correctly
In 49 protons 49 electrons b
the atomic number of an element is the total # of which particles in the atom
protons
what element has the electron config. 1s2 2s2 2p6 3s2 3p2
silicon si
which of the following is true about the electron config of the noblee gasses
the highest occupied s and p sublevels are completely filled
elements that are characterized by the filling of p orbitals are classified as
3-8 groups
which of the following electron configurations is most likely to result in an element that is relatively inactive
a filled highest occupied pricipal energy level
which subatomic particle plays the greatest part in determining the props of an element
electrons
which of the following elements is a transition metal
copper
which of the following is true about the electron config. of the representative elements
the highest occupied s and p sublevels are partially filled
what are the group 1A and group 7A elements examples of
representative elements
which of the following groupings contains only representative elements
Al,Mg,Li
of the elements Fe,Hg,U,&Te which is a representative element
Te
how does atomic radius change from top to bottom in a group in the periodic table
it increases
how does the atomic radius change from left to right across in a periodic table
tends to decrease
what causes the shielding effect to remain constant across a periodic table
electrons added to the same level cause it depends only on the electrons in lower shells
atomic size generally __as you move from left to right across a period and ___ from top to bottom with a group
decrease; increase
what element in the send period has the largest atomic radius
lithium Li
which of the following factors contributes to the increase in atomic size within a group in the periodic table as the atomic number increases
more shielding of the electrons by the highest occupied energy level
which of the following elements has the smallest atomic radius
chlorine
what is the charge of a cation
+
which of the following is true about ions
cations form when an atom loses electrons
the metals in groups 1A,2A,&3A all_ electrons when they form ions with a _ charge
lose;+
which of the following statements is not true about ions
when cations form more electrons are transferred to it
why is the 2nd ionization energy greater that the first ionization energy?
it is more dificult to remove a second electron from an atom
in which of the following sets are the charges given correctly for all the ions
K+ Sr2+ O2-
what is the element with the highest electronegativity value
flourine
which of the following elements have the smallest ionic radius
Li
what is the energy required to remove an electron from an atom in the gaseous state called
ionization energy
for groups2A metals which electron is the most difucult to remove
the 3rd
which of the following factors contributes to the decrease in ionization energy within a group in the periodic table as the atomic # increases
increase in atomic size
which of the following elements has the smallest 1st ionization energy
potassium
which of the following elements has the smallest electronegativity
lithium
which statement is true about electron negativity
generally increases from left to right across the period
compared with the electronnegativities of the elements on the left side of a period the electronegativities of the elements on the right side of the same periodic table tend to be
higher
which of the following decreases with increasing atomic # in group 2A
ionization energy
which of the following statements correctly compares the relative size of an ion to its neutral atom
the radius of an anion is greater than the radius of its neutral atom
which of the following factors contributes to the increase in ionization energy from left to right across a period
an increase in the # of proton
as you move from left to right across the 2nd period of the periodic table
ionization energy increases
of the following elements which one has the smallest ionization energy
aluminum
how many electrons are there in the highest occupied energy level of atoms in group 5A elements
5
how many electrons are present in the d sublevel of a neutral atom of nickel
8
how many electrons are in rubidum ion RB+
36
what is the usual charge on an ion from group 7A
1-
how many electrons does the Ca2+ contain
18