Flashcards in Openstax Ch 7 Deck (28):
A cation is a ______ ion
An anion is a ______ ion
forces between oppositely charged cations and anions
Binary ionic compounds are composed of ______ elements
metallic elements have _____ ionization energy
low ionization energy means that atoms will _____ electrons easily
nonmetal elements have ____ electron affinities
nonmetal elements are where on the periodic table?
upper right hand side
all substances must be electrically ______.
in a cation, the atom of a main group element loses its valence electrons to become like a _____?
covalent bonds are when atoms do what?
share electrons equally between themselves
covalent bonds are formed when two atoms have similar what?
ionization energies and electron affinities
covalent bonds have lower what than ionic compounds?
melting and boiling points
determined by the distance which the lowest potential energy is achieved
pure covalent bonds are in what molecules?
polar covalent bonds are what?
when one atom as a partial positive and another is a partial negative
what is an example of a polar covalent bond?
properties of the bonding atoms
the more strongly an atom attracts the electrons, the ______ the electronegativity
A _____ difference in electronegativity means the atom is more ______
larger ; polarized
< 0.4 electronegativity means the bonds are
electronegativity between 0.4 (0.5) and 1.8 (2) means the bonds are
electronegativity > 1.8 (2) means the bonds are
element symbol with valence electrons
shows bonds between atoms
unbonded electrons are called
each atom follows a noble gas