CREF 19 Flashcards
What Law did J Dobereiner create?
Law Of Triads
In what year was the Law of Triads established?
1817
What is the Law of Triads?
Grouped elements with similar properties into threes
What Law did J Newlands create?
Law Of Octaves
In what year was the Law of Octaves established?
1864
What is the Law of Octaves?
Periodicity. A repeating pattern in properties
What Law did D Mendeleev create
Periodic Law
What year was the Periodic Law established?
1869
What is the Periodic Law
A periodic table with gabs for undiscovered elements. Correctly predicting the properties of the elements. His periodic table was accepted.
What law did H Moseley create
Moseley’s Law
What year was it established?
1913
What is Moseley’s Law?
Arranged elements on periodic table based on the number of protons.
