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100
Dmitri Mendeleev
Who created first periodic table?
100
The periodic table is divided into blocks which represent
What are the s,p, d and f orbitals ( that contain the valence electrons)
100
The columns in the periodic table are called
What are Groups?
100
Elements in Groups 3-12
What are transition elements?
100
An atom or molecule that has a positive or negative charge
What is an ion?
200
Newell
Who came up with the law of octaves?
200
This block contains 2 groups
What is the s-block?
200
The rows in the periodic table are called
What are periods?
200
Elements that are shiny and conduct electricity
What are metals?
200
Statement that atoms tend to gain, lose or share electrons to acquire a full set of eight valence electrons
What is the octet rule?
300
Invented the spectroscope
Who is Kirchhoff?
300
This block contains 6 groups
What is the p-block?
300
The elements in a group have the same number of these
What are valence electrons?
300
Elements in Group 18
What are the nobel gases?
300
Berzelius discovered this while making glassware to use in his experiments
What is silicion?
400
Discovered Helium and named it after Greek Sun God
Who is Lockyer?
400
This block contain 10 Groups
What is the d-block
400
Groups 1,2 and 13-18 are called
What are the representative elements?
400
Elements in Group 2
What are the alkaline earth metals?
400
Energy required to remove an electron from a gaseous atom
What is ionization energy?
500
Discovered the Noble Gases
Who is Ramsay?
500
This is the element in Group 16, Period 2
What is oxygen?
500
The element in Group 13, Period 3
What is aluminum?
500
Elements in Group 17
What are the halogens?
500
An atom becomes negatively charged by
What is gaining an electron?