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one-half the distance between the nuclei

when determining the size of any atom by measuring the distance between identical adjacent nuclei, the radius of an atom is

either released or absorbed.

when an electron is added to a neutral atom, a certain amount of energy is

distance between nuclei or adjacent atoms

atomic size is determined by measuring the

ionization energy

the energy required to remove an electron from an atom is the atom's

electronegativity

a measure of the ability of an atom in a chemical compound to attract electrons is called

fluorine

the element that has the greatest electronegativity is

atomic radius

one-half the distance between the nuclei of identical atoms that are bonded together is called the

an electron

ionization energy is the energy required to remove ______ from an atom of an element

electron affinity

when an electron is acquired by a neutral atom, the energy change is called

cation

a positive ion is known as a

anion

a negative ion is known as an

decreases

in a row in the periodic table, as the atomic number increases, the atomic radius generally

increases

within a group of elements, as the atomic number increases, the atomic radius

have the highest ionization energies

in the alkaline-earth group, atoms with the smallest radii

gradually decrease

as the atomic number of the metals of group 1 increase, atomic radii

gradually decrease

across a period in the periodic table, atomic radii

the number of energy levels increase

which is the best reason that the atomic radius generally increases with atomic number in each group of elements?

the number of energy levels increases

which is the best reason that the atomic radius generally increases with atomic number in each group of elements?

the noble gas configuration has be reached

the ionization energies for removing successive electrons from sodium are 496 kJ/mol, 4562 kJ/mol, 6912 kJ/mol and 9544 kJ/mol. the great jump in ionization energy after the first electron is removed indicates that

increases

for each successive electron removed from an atom, the ionization energy

generally increases

as you move down the periodic table from carbon through lead, atomic radii

generally decrease

as you move left to right from gallium through bromine, atomic radii

generally increases

the energy required to remove from an electron for an atom ______ as you move left to right from potassium through iron

weak

the force of attraction by group 1 metals for their valence electrons is

valence electrons

the electrons available to be lost, gained, or shared when atoms form molecules are called

lost, gained, or shared

when chemical compounds form, valence electrons are those that may be

in the highest energy level

valence electrons are those

s

in group 2 elements, the valence electrons are in sublevel

7

the number of valence electrons in group 17 elements is

minus 10

for groups 13 through 18, the number of valence electrons is equal to the group number

2

the number of valence electrons in group 2 elements is

s and p

in groups 13 through 18, valence electrons may be in sublevels

decrease

across a period, the atomic radii of d-block elements generally

increase

as with main-group elements, ionization energies of d-block elements generally ______ across a period

increase

in contrast to elements in the main group, the first ionization energies of d-block elements _____ as one proceeds down each group

s electrons

the first electrons to be removed when d-blocks elements form ions are the

groups 1 and 2

which groups in the main group have lower electronegativity than d-block elements?

increase

among the d-block elements, as atomic radii decrease, electronegativity values

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