Atomic History
Periodic Table History
Groups
Table Info
Elements
100
The father of atomic theory
Who is John Dalton
100
Used triads to describe the properties of similar elements
Who is Dobereiner
100
This is the most reactive group of metals
What is alkali metals
100
The number of energy levels is determined by this number
What is period number
100
Na
What is sodium
200
used the cathode-ray tube to discover the electron
Who is JJ Thomson
200
Arranged the periodic table by repeating physical properties
Who is Newland
200
This is the most reactive type of non-metals
What is the halogens
200
The number of valence electrons is determined by this number
What is the units place on a group number
200
K
What is potassium
300
Discovered the Nuclear model using the Gold Foil experiment
Who is Rutherford
300
The father of the periodic table
Who is Dmitri Mendeleev
300
These elements have propeties that are similar to both metals and non-metals
What are the metalloids
300
This number is an elements identity number and is used to determine the number of protons
What is the atomic number
300
Fe
What is iron
400
This man compared the structure of an atom to the solar system
Who is Neils Bohr
400
Arrange the periodic table according to atomic number
Who is Mosley
400
This family contains unreactive elements
What are the noble gases
400
This number is the sum of the number of protons and neutrons an atom
What is the mass number
400
Elements with the same number of protons but different number of neutrons are called this
What are isotopes
500
The modern model of the atom is described as this
What is wave model or electron cloud model
500
The modern periodic law states that physical and chemical properties occur in repeating patterns when elements and arranged according to
What is atomic number
500
The most reactive metal and non-metal
What are Cs and F
500
This number is the average mass of all naturally occurring isotopes
What is average atomic mass
500
Elements that do no have equal numbers of protons and electrons are called this
What are ions
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