Organization Trends History Properties of Elements Blocks and Worth
100
Where is the atomic number located in relation to an element square?
At the top/ above the element's symbol
100
Metallic character runs across the periods from ______ to ______
__Left__ to __right__
100
Who designed the first periodic table?
Dmitri Mendeleev
100
Which group of elements are good conductors of electricity?
Metals
100
What family/families does the f-block consist of?
Lanthanides and Actinides
200
How do you determine the amount of electrons an element has?
It is equal to the atomic number
200
Atomic radius runs up and down the groups from ______ to _____
__top__ to __bottom__
200
How many known elements were there at the time of the creation?
56
200
Halogens are found in which family of the periodic table?
Group 17 (or) Group VIIA
200
What block is oxygen located in?
p-block
300
How many neutrons does gold have?
118
300
The Ionization energy is a trend that runs from the _____ ______ to the _______ _____
__bottom__ __left__ to __top__ __right__
300
How many spaces did he leave open for further discovering of elements?
8
300
Which kind of elements can vary in how many valence electrons they can have?
Metals
300
How many elements are in block 3D?
10
400
Name 3 elements that are metalloids.
Any 3 of the following: Silicon, Germanium, Arsenic, Antimony, Tellurium, Boron, Polonium, Astatine, aluminum
400
Define Ionization Energy
The required energy required to remove an electron from an ion
400
What was the creator of the periodic tables profession?
Chemist
400
The most stable kind of elements are _____
Noble Gases
400
Name the letters of all 4 blocks
S, P, D, F
500
What does the atomic mass symbolize?
The atomic mass symbolizes the average atomic mass of that element's isotopes based on how common each isotope is found in the world.
500
Define Electron affinity
The energy released when an electron is added to a neutral atom
500
Name one difference between the creators periodic table vs. the periodic table.
Creator: organized based on atomic mass
Modern: Based on atomic number
Creator: Organized vertically
Modern: Organized Horizontally
500
The most reactive elements on the periodic table are ____
Alkali Metals
500
What block is Helium in?
S-block






Periodic Table: UNIT 2

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