History of the Periodic Table
Electron Configuration
Properties
Trends
Chemical properties

100

Who invented the periodic table?
Who is Dmitri Mendeleev.

100

What are the four blocks of electron configuration in order of smallest to biggest?
S, P, D, F

100

How reactive are Alkali metals?
Very reactive.

100

What happens to the atomic radius when it moves across a period?
It decreases.

100

What is a chemical property of halogens?
High electronegativities. 7 valence electrons Highly reactive.

200

Who discovered that the elements fit into patterns better when arranged according to atomic number?
Henry Mosely

200

What is the amount of electrons that the s block can hold?
Two Electrons

200

How many electrons are in the outer shell of Alkaline Earth Metals?
It is +2.

200

What happens to the atomic radius when it moves up and down?
It increases.

200

What law states that the physical and chemical properties of the elements are periodic functions of their atomic numbers.
Periodic Law

300

Who discovered similar elements have relative atomic masses?
Doberiner

300

What is the amount of electrons that the p block can hold?
Six Electrons

300

What states of matter do halogens exist in at room temperature?
They are gas, solid, and liquid.

300

What is the effect to the ionization energy when it moves across a period?
It increases.

300

What is the characteristic about the atom that changes under varied conditions?
The atom's radius

400

Who discovered that the mass of an atom was its most important property?
John Dalton

400

What is the energy sublevel that has five electrons?
The D block

400

Why are noble gases considered stable?
The oxidation number of zero prevents the noble gases from forming compounds.

400

What happens to the electronegativity as it moves up and down?
It decreases.

400

What is the difference between alkali metals and noble gases?
Noble gases have all of their valence electrons in the outermost shell and alkali metals don't.

500

Who compiled a periodic table of 56 elements based on the periodicity of the properties?
Meyer

500

What is the maximum number of electrons that energy level 4 can hold?
32 electrons

500

What are the three characteristics of all metals?
They're malleable, ductile, and good conductors of heat and electricity.

500

What happens to the ionization energy when it moves up and down?
It decreases.

500

What is the significance of having the same number of electrons in the outermost shell?
The elements in the same group have the same properties.