Chemistry unit 6: Chemical Bonding test review
what charge will it have when it loses or gains those electrons (potassium)
+1
when magnesium gets the same electron configuration as Ne it has a ___________ charge
+2
how many electrons does sodium want to lose to become isoelectric with neon?
1
what is the new configuration for potassium after its isoelectric with a noble gas?
1s^2 2s^2 2p^6 3s^2 3p^6
write the electron configuration for potassium
1s^2 2s^2 2p^6 3s^2 3p^6 4s^1
when nitrogen bonds covalently it will make a total of _____________ bonds
3
a double covalent bond consists of ___________ shared electrons
4
molecules with a trigonal bipyrimid shape have a total of _______ atoms in the molecule.
6
if K and N bonded together, what would the formula be for the compound they would form? (know how to use electron dot structures)
K3N
write the electron dot structure for potassium
K•
the VSEPR theory stands for ________________________________________________
Valence shell electron pair repulsion theory
what are ionic compounds composed of?
a metal and a nonmetal
when do ionic compounds conduct electricity?
aqueous and liquid states
what noble gas is potassium isoelectric with when it loses 1 electron?
argon
what are ionic compounds made of?
crystals
what is the chemical formula for ionic compounds called?
empirical formula
Atoms in group 15 will _______ three electrons to get a -3 charge
gain
in ionic bonding, the 2 ways atoms can get the same configuration as a noble gas is by _____________________ or _____________________ electrons
gaining, losing
what is the only noble gas with 2 valence electrons
helium
ionic compounds have __________________ boiling and melting points
high
what is the only element in group 1 to bond covalently?
hydrogen
the 2 types of bonding are _________________ and ________________
ionic, covalent
Ar and Cl-1 have the same electron configuration, so they are ___________ with each other
isoelectric
know how to draw structural formulas
know how to draw structural formulas
what are crystals?
large structures consisting of alternating + and - ions
know all the geometric shapes
linear (2-3), bent (3), pyramid (4-polar), tetrahydral (5-nonpolar), trigonal planar (4), trigonal biplanar (6)
how many electrons will it lose or gain to attain a noble gas configuration (potassium)
lose 1
covalent compounds have __________________ boiling and melting points
low
metals are ____________________, which means they can be hammered into different shapes
malleable
what is the chemical formula for covalent compounds called?
molecular formula
what is a group of atoms called in covalent bonds?
molecule
do covalent compounds conduct electricity?
no
what says that most atoms want 8 electrons in their outermost shell?
octet rule
in a _____________________ covalent bond, electrons are shared unequally
polar
when atoms lose electrons they get a ___________________ charge
positive
the difference between the trigonal planar and the pyramid shapes is that the _________________ shape has an unshared pair of electrons on the central atom
pyramid
in covalent bonding, atoms _________ electrons
share
a ________________ covalent bond consists of 2 shared electrons
single
Ionic compounds will not conduct an electric current in the _______________ state
solid
ionic bonds are very ___________
strong
molecules with 5 atoms, like CH4, will have a ______________________ shape
tetrahedral
ionic bonds involve a ______________ of electrons
transfer
what are covalent compounds composed of?
two non-metals
The electrons in an atom's outermost shell is called
valence electrons
covalent bonds are very __________
weak
I-1 has the same electron configuration as the noble gas ___________________
xenon
