(Valence) Electrons
How many valence electrons does Oxygen (O) have?
6
CaF2
Calcium fluoride
hydrogen + oxygen yield dihydrogen monoxide
2H2 + O2 --> 2H2O
My pH is greater than 7
Base
hydrogen
H2
What valence does Magnesium have, and what does this mean?
2 because it must form 2 bonds to lose its 2 valence electrons
N2H4
Silver plus chlorine yield silver (i) chloride
2Ag + Cl2 --> 2AgCl
my pH is 7
neither an acid nor a base: it's neutral
Tricarbon pentahydride
C3H5
Which of the following has a valence of 3:
Boron (B) or Fluorine (F)
Boron
H20
dihydrogen monoxide
Calcium plus magnesium chloride yields magnesium plus calcium chloride
Ca + MgCl2 --> Mg + CaCl2
HF
acid
titanium (ii) chloride
TiCl2
If an atom has a valence of 2 which of the following is true:
a. it must be in group 2
b. it must be in group 16
c. none of the above
c. none of the above
Li2O
lithium oxide
beryllium plus oxygen yield beryllium oxide
2Be + O2 --> 2BeO
I turn red litmus paper blue...
base
calcium bromide
CaBr2
This is the lightest atom that has a valence of 0
Helium (He)
F2O2
Difluorine dioxide
Cu (II) chloride plus zinc yields copper plus zinc (II) chloride
CuCl2 + Zn --> Cu + ZnCl2
HCl + NaOH --> ___ + ___
NaCl + H20
Vanadium (3) oxide
V2O3