3. Is a group of chemical elements
that do not interact with other
elements in a manner
General, because their electron
orbits are complete and filled with
electrons, including these
4. Helium, neon, argon, krypton, xenon, radon.
These elements are in the eighth group of the
periodic order and they form
0.93% of the atmospheric volume and 1.29%
of its mass.
It is called inertia because it does not interact
with other elements ie it is inactive
Chemically and metaphorically noble of it as
the nobles do not confuse with the general
any ordinary elements.
5.
6. 1. Show as gases in room conditions.
2. No color and no smell.
3. Have 8 electrons equivalent.
4. Produce vehicles only in special
circumstances.
5. It is drawn from the air in liquefaction and
distillation.
6. Found in the form of single-atom gases.
7. Very weak internal attraction between their
atoms.
8. It has very low melting and boiling grades.
7. Helium (He)
It is used for balloons and balloons because it is
lighter than air and does not burn or explode.
8.
9. Used to mark flight paths and gas lamps
because of the color of its light Bright White.
10. It is used as liquefied gas in lighting lamps,
especially as it does not react with the
glowing metal wire even at high
temperatures.
11. Radon is highly flammable and carcinogenic
by inhalation. Radon is used in the treatment
of certain types of cancers.
