Ionic Bonds
What makes an ionic bond?
What is transfer of electrons between a cation and an anion?
How are covalent bonds formed?
What is a sharing of electrons?
What are the rules of electronehgativity?
<.5 = nonpolar
.5-1.9 = polar
1.9< = ionic
_C3H8O+_O2 ->_CO2+_H2O
What is the coefficient in front of Oxygen?
9
How many molecules in 7.5 moles SO2?
4.52 x 1024 molecules SO2
Ferrous Nitride
What is Fe3N2?
The structure of NHO (w/o lone pairs shown)
O=N-H
What are the exceptions? What makes a molecule nonpolar if the binds are polar?
Trigonal Planar, tetrahedral, or linear shape with all of the same type of attached elements to center element!
3 AgNO3+_(NH4)3(PO4) -> Ag3(PO4)+ 3 (NH4)NO3
Is this equation balanced?
Yes!
Grams in .248 moles KBrO2?
37.4 g KBrO2
Why is a cation positive and an anion negative?
What is an imbalance of electrons and neutrons, creating a charge?
The geometry of CH2O
Trigonal Planar 120o
Arrange elements in order of increasing electronegativity:
F, Na, Al, C, Cs
Cs, Na, Al, C, F
_Cl2+_NaI -> _NaCl+_I2
What is the sum of the balanced coefficients?
6
Milligrams in .354 moles NH4Cl?
1.89 x 104 mg NH4Cl
Name of (NH4)2(CO3)
What is ammonium carbonate?
Bond angle around O on the board!
Bent (109.5)
Does BeCl2 have polar bonds?
Yes!
A. _C7H16+_O2 -> 7 CO2+8 H2O
B. _K2CrO4+_Pb(NO3)2 -> 2 K(NO3)+_PbCrO4
C. 4 Fe3O4+_O2 -> 6 Fe2O3
Which equation isn't balanced?
A
Atoms in 66.3 g of gold?
2.03 x 1023 atoms of Gold
Formula and name of Ba2+ and (NO3)-
What is Ba(NO3)2, called Barium Nitrate?
Trigonal Planar 120o and Tetrahedral 109.5o
Is BeCl2 a polar molecule?
No!