Historic Table
Table
Group details
Group details 2
100
By atomic number.
How is the modern periodic table ordered?
100
Period
On the periodic table what are the horizontal rows called?
100
Na, Mg and Cl
What is Name three reactive elements in period three.
100
Fr
Which alkali metal is most reactive?
200
Atomic Mass.
What did Mendeleev use to arrange the order of his cards of elements?
200
Groups
On the periodic table what are the vertical columns called?
200
The Number of valence electrons.
What is the reason the most reactive elements are reactive.
200
F
Which halogen is most reactive?
300
The ability to make risky predictions and be correct.
What proved that Mendeleev was correct?
300
Atomic Mass Unit
What does AMU stand for?
300
Brittleness
What is Name a physical property that metals do NOT have.
300
Ne, Ar and Kr
Which gasses are used in colored lights used in advertising?
400
The combiniation of the mass of the protons and neutrons in an atom.
What is atomic mass?
400
Alkali metals, Alkali Earth metals, Transition metals, Other metals.
What is Name a group that contains only metals.
400
Six
What is the number of valence electrons in oxygen?
400
Na, K, F, Cl
What element would only be found in nature in compounds?
500
Carbon (1/12th of a C 12 atom)
What element is the standard for atomic mass?
500
Gas
What state of matter is missing for metals at room temperature?
500
Inert.
What is different about the noble gasses?
500
To keep a substance from reacting.
What is Why would we store certain substances in a container filled with argon?
M
e
n
u