Answer the following questions as we go through the review Bonding Test Review Answer the following questions as we go through the review

covalent ionic anion cation Name for an atom that has gained electrons Name for an atom that has lost electrons Shared pair of electrons between two atoms Involves a complete transfer of electrons

Magnesium Iodine Krypton Would gain electrons and form a negative ion Would lose electrons and form a positive ion Two that would combine to form an ionic compound Has a greater electronegativity

0 to .2 .3 to 1.7 > 1.7 Electronegative difference resulting in ionic bond Electronegative difference resulting in nonpolar covalent bond Electronegative difference resulting in polar covalent bond

tetrahedral outermost s&p’s 32 resonance structure 2 polar Suborbitals comprising valence electrons A structure that cannot be represented by one model Number and type of bonds in a nonpolar molecule of MgH2 Number of valence electrons in PO4-3 Shape of methane (CH4)

Bond energy crystal lattice valence electrons ionic bonds Measure of bond strength Three dimensional arrangement of positive and negative ions Outermost s and p electrons Bonds formed by electrostatic forces

Isoelectronic mobile charged particles electronegativity covalent What nonmetals must have to conduct electricity Attraction for a shared pair of electrons Having the same number of electrons Formed by sharing electrons

VSEPR theory double covalent triple covalent polyatomic ion Sharing of 4 electrons Sharing of 6 electrons Electrons orient themselves to minimize repulsive forces Individual atoms bonded by covalent bonds

Two points that determine a polar molecule Do resonance structures violate octet rule? Is a molecule with dipole moments in opposite directions polar? Can a molecule have both ionic and covalent bonds?

Opposite directions repulsive forces three-dimensional lone pairs Electron dot structures are often Arrangement of atoms in molecules depends on the arrangement of bonding and __________ of electrons. Attractive forces must be greater than ___ before a covalent bond can form Water is polar because the two dipoles do not point in __________.

Attraction for a shared pair of electrons Formed by sharing electrons Isoelectronic mobile charged particles electronegativity covalent VSEPR theory Attraction for a shared pair of electrons Formed by sharing electrons Electrons orient themselves to minimize repulsive forces Having the same number of electrons What nonmetals must have to conduct electricity

Like dissolves like: polars combine with polars, nonpolars with nonpolars: polar molecules do not combine with nonpolar molecules Which elements will form positive cations when they react? sodium, sulfur, chlorine, calcium, fluorine Which elements will form negative anions when they react? The arrangement of atoms in a molecule depends on the arrangement of bonding and lone pairs of electrons. For polar molecules to form the atoms must be connected by polar bonds and have a non-symmetrical shape Cations combined with a polyatomic ion form a compound having both ionic and covalent bonds The greater the difference in electronegativity of a metal and a nonmetal the higher the melting point of the ionic compound How many valence electrons in PO3-3 Why are noble gases not normally found in compounds?