History
Periodic Trends
Definitions
Find That Element
Miscellaneous
100
He developed the first periodic table.
Who is Mendeleev?
100
Atomic radius increases going down and to the ____ on the periodic table.
What is to the left?
100
The energy needed to remove the outermost electron of an atom.
What is ionization energy?
100
A halogen in period 3.
What is chlorine?
100
The most reactive halogen.
What is fluorine?
200
Mendeleev grouped elemnts together by similar __________ to make a periodic table of elements.
What are properties?
200
A positively charged cation is __________ than its respective atom.
What is smaller?
200
An atom's ability to attract electrons to itself when bonded to another element.
What is electronegativity?
200
An alkali metal in the 7th period.
What is francium?
200
The most reactive alkaline earth metal.
What is radium?
300
Mendeleev arranged elements by increasing ________ ____ to make his periodic table.
What is atomic mass?
300
Ionization energy increases up and to the _____ on the periodic table.
What is to the right?
300
A characteristic that all of the noble gasses share.
What is they are extremely stable (and generally nonreactive)?
300
Element in group 1 with the lowest ionization energy.
What is francium?
300
Each period in the periodic table represents one of these.
What is an energy level?
400
Mendeleev was able to do this using his periodic table
What is predict the properties of unknown elements?
400
Electronegativity increases up and to the _____ on the periodic table.
What is to the right?
400
The name of all the group 1 elements, except for hydrogen.
What is alkali metals?
400
The only metalloid in period 3.
What is silicon?
400
Name of the elements located in the d orbital block in the periodic table.
What are the transition metals?
500
Mendeleev developed the first periodic table in what century.
What are the 1800's?
500
Sodium has a much lower Ionization Energy than Neon due to this.
What is it has a single valence electron that is easier to remove?
500
The name of the group of elements that all have 7 valence electrons.
What are Halogens?
500
The element with the highest electronegativity.
What is fluorine?
500
An element that would be the best replacement for potassium in an experiment.
What is sodium or rubidium?
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