History of Periodic Table
Periodic properties
Trends
Elemental Groups
Miscellaneous
100
He rearranged the periodic table by increasing atomic number
who is Moseley?
100
Bond Radius
What is half the distance between two bonded nuclei
100
Has a larger Atomic radius - Na or Sr
Sr.
100
What are the names of the groups that are the most reactive among the metals?
Alkali Metals, Alkaline Earth Metals
100
Electron in the outermost energy level is known as the
What is "valence electron"?
200
Law of Octaves
What is - when arranged by increasing Atomic mass the properties of every 8th element repeats?
200
What is the term that refers to the energy need to remove an atom's electron?
Ionization Energy
200
Has a larger electronegativity value - As or F
F
200
The d block elements are also called ......
Transitional Metals
200
The number of valence electrons in Ge
What is 4?
300
How is the periodic table arranged today?
By atomic number.
300
The name of the term that defines how strongly an atom attracts a pair of electrons in a bond
Electronegativity
300
Chlorine has a higher Ionization energy than I because.....
What is - it has fewer Energy levels and therefore the valence electrons are attracted more to the nucleus than in Iodine?
300
Another name for elements in Group 7A or 17
What are the Halogens?
300
According to scientists all elements were created subsequent to which event?
What is the Big Bang?
400
Dmitri Mendeleev classified elements according to their __________ and _____________?
atomic mass and similarity in properties
400
What is the name of the term that describes how ACTIVE an element is with other elements?
Element reactivity
400
Elements in the same family have similar chemical and physical properties because.....
What is - they have the same number of valence electrons?
400
Which elements belong in the Noble gases?
What are - He, Ne, Ar, Kr, Xe and Rn?
400
The element that is produced when a He nucleus fuses with a Be nucleus?
What is Carbon?
500
Who is credited for the creation of the periodic table which we use today?
Dmitri Mendeleev
500
Transmutation
The transformation of the nucleus of an atom into another element through a nuclear reaction
500
Rank the following elements by increasing atomic radius: carbon, aluminum, oxygen, potassium
N, C, Al, K
500
The elements with Atomic number 57 - 71 are known as...
What are the Lanthanides?
500
The "Large Hadron Collider" is a ....
What is a particle accelerator?
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