These scientists were the first to come up with a way to arrange the elements on the periodic table
Who is Lothar Meyer and Dmitri Mendeleev?
100
describes the general trend that atomic radius follows on the periodic table.
decreases as you move right in a period
increases as you move down a group
100
The amount of energy required to remove an electron from an element.
ionization energy
100
These elements belong to noble gas family.
For bonus point, name them in decreasing atomic radius.
Rn, Xe, Kr, Ar, Ne, He
100
Elements that belong in a family that did not want to gain or lose electron.
Noble gas
200
This British Scientist re-arranged the Periodic Table to better fit each elements reactivity, in fact our modern periodic table is based on his work
Who is Henry Mosley?
200
Metal tend to form _________ ion by losing _______.
positive ion , electrons
cation, electrons
200
The size of atom
Atomic radius
200
Name every diatomic elements
For bonus point, name the smallest diatomic element.
H2, N2, O2, F2, Cl2, Br2, I2
H2
200
Most of these element exist as diatomic element. This family like to form -1 anion.
Halogens
300
This property was first used to arrange the Periodic Table of the elements
What is the atomic mass?
300
This particular property of elements can be used to explain why cations get smaller when they form ions and why anions are larger when they form ions.
nuclear attraction
electron repulsion
300
Proton in nucleus pulling the electron result in smaller radius
nuclear attraction
300
Name all alkali metal
Bonus point: who has lowest electron affinity?
Li, Na, K, Rb, Cs, Fr
Fr
300
These elements contain 1 valence electron.
alkali metals
400
This property is what is now used to arrange the elements on the periodic table.
What is the atomic number?
400
Magnesium ion is smaller than Calcium ion for this reason
being further down in it's group
400
attraction of an atom for an additional electron
electron affinity
400
Name all diatomic elements that are not halogen.
BONUS: name diatomic elements that are also halogen.
H2, N2, O2
(F2, Cl2, Br2, I2)
400
The elements in this family have really large third ionization energy compare to the second ionization energy.
Alkaline earth metal
500
Several of the elements would have to be rearranged on the periodic table if it were still based on atomic mass. Give 3 examples of elements that would need to be rearranged.
What are K and Ar, Te and I, and U and Np?
500
Please arrange the following elements based on increasing ionic size:
Strontium Ion, Bromide, Selenide, and Rubidium Ion. Please give the correct symbols and charges
Sr 2+, Rb 1+, Br 1-, and Se 2-
500
Please arrange the following elements based on decreasing ionization energy:
Gallium, Krypton, Calcium and Arsenic
Krypton, Arsenic, Calcium, and Gallium
500
Arrange the following elements based on increasing radius
Chlorine, Oxygen, Fluorine, and Nitrogen
Sulfur, Chlorine, Oxygen, and Fluorine
500
Elements in this family are most likely to gain 2 electrons to fill their valence shell.