1. Draw up schemes for the formation
of bonds between the atoms of the following
elements:
C and P; So; Mg u Si
2.
What kind of bond and type
of crystal
lattice
do you
follow me:
CaO, C, SiO2, Fe, K3N
Assume their physical
properties.
3. Specify which process
is depicted by the following diagram
(oxidation or reduction) and
make an electronic balance
corresponding to this scheme:
a) Cu0 -, Cu+2
b) S0
- S-2
B) Fe+3
Fe0
4. Make
up the redox reactions and
arrange the coefficients
by the electronic balance method:
A) H2O + CO2 - HCL +O2
b) Fe203 + H2 - Fe + H20
b) H2SO4 + S - SO2 + H2O