2. Origins:
• Dmitri Mendeleev created the first periodic table
according to the elements atomic mass in 1869.
• It was developed in Russia.
• Dmitri Mendeleev was born in Verkhnie
Aremzyani, Russian Empire.
3. Organization:
• The table is organized by the elements Atomic mass.
• Metals are on the left of the table. Nonmetals are grouped on the
right and metalloids along the the metals and nonmetals, inert
gases are on the far right. Rare earth metals are on the bottom.
Transition metals are in the middle. Hydrogen is on the top left by
itself
• Atomic mass is just the number of protons found in the nucleus of
that element.
4. Relationships of The
Elements:
They are arranged by what
they are. ( Such as
Nonmetals,noble
gasses,ect..)
But do not forget by their
atomic mass!
5. Hydrogen:
Name: Hydrogen
Atomic Number: 1
Element Symbol: H
Atomic Mass:1.00794 ± 0.00007
u
Facts: Hydrogen provided the
amount lift for the first reliable form
of air-travel.
7. Boron
Name:Boron
Atomic Number: 5
Element Symbol: B
Atomic Mass:10.86
Examples: Silly putty,
Soaps, fire deterrents,
shield nuclear
reactors, and is also
used in the process of
making glass.
8. Oxygen
Name: Oxygen
Atomic Number: 8
Element Symbol: O
Atomic Mass: 15.99
Examples: The air we
breath.
