What's my name?
Na2O
sodium oxide
Avogadro's number
What is the electron configuration for Li?
1s^2 2s^2
A simple chemical rule of thumb that states that atoms tend to combine in such a way that they each have eight electrons in their valence shell in order to feel "complete
What do we call a mixing of atomic orbitals to form bonding orbitals?
hybridization
iron (III) oxide
1 mole element = _________ of element
1 mole element = 6.02x1023 atoms of element
According to VSEPR theory, what is the shape of a molecule of CS2?
a. linear
b. bent
c. trigonal-planar
d. tetrahedral
a
elements that follow incomplete octet rule
Boron and Beryllium
Which type of hybrid orbitals do oxygen atoms form in water molecules?
sp3
Na2C2O4
sodium oxalate
To convert between grams and mole, what do we use?
molar mass
According to VSEPR theory, what is the shape of a molecule of NBr3
a. bent
b. trigonal-planar
c. tetrahedral
d. trigonal-pyramidal
d
A covalent bond is formed when two atoms
a. share an electron with each other.
b. share one or more pairs of electrons with each other.
c. gain electrons.
d. gain and lose electrons
b
which orbital participates in pi bonding?
p orbital
bismuth (III) nitrate
How many moles are there in 1.25x1023 atoms of Fe?
1.25x1023 atoms Fe x ( 1mole Fe / 6.02x1023 atoms Fe) = 0.208 mole Fe
The biggest cause of VSEPR shapes.
e- repulsion
# of lone pairs for XeCl2?
3 pairs
If a central atom has sp hybridization, how many p-orbitals does it have?
a. 0
b. 1
c. 2
d. 3
e. 4
c
HC2H3O2
acetic acid
How many oxygen atoms are there in 1.30 mole of Ag2C2O4?
1.30 mole Ag2C2O4 x ( 4 mol O / 1 mole Ag2C2O4 ) x (6.02x1023 atoms O / 1 mol O) = 3.13x1024 atoms O
The shape of BeF2
linear
As the electronegativity difference between bonded atoms decreases, the bond becomes more
a. covalent
b. ionic
c. metallic
d. Both (b) and (c)
a
In which of the following compounds has the central atom not formed sp3 hybrid orbitals?
a. CCl4
b. CO2
c. PCl3
d. NH3
b