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Unit 3 Periodic

Who was the first person to mostly create the Periodic Table? Dimitri Medeellev
Who was the first person to attempt to organize and predict gaps in the Periodic Table? Newlands
What is the definition of "periodic"? Occurring in a regular, repeating pattern
What did Mosely do? Discovered each element contins a unique number of protons in a nucleus. He also rearranged Mendeleevs Periodic Table by number of protons/atomic number, rather than mass.
What is the Periodic Law? When elements are changed by atomic number their chemical and physical properties show regular patterns of variation.
Which type of element is unreactive, has a full outermost energy level and has no bonding? Noble Gases
What determines physical properties of an element and is arranged in families in the Periodic Table? Having the same number of valence electrons.
The S + P orbitals is the __ group? A or 'Representative Group'
The B + D orbitals is the __ group? B
Which type of element tend to be... -good conductors -malleable -ductile -lustorus -solids at room temp Metals
Which type of metals tends to be... -Good insulators -brittle -dull -often liquids and gases at room tepmperature Non-metals
Which group is referred as the Alkai metals? Group 1 or 1A
Which group is very reactive and explosive in water, has one valence electron, and never found pure in nature? Group 1 or 1A
Which group is referred to as the Alkaline Earth Metals? Group 2 or 2A
Which group is referred to as the Halogens? Group 17 or 7A
Which group is... -generally non-reactive -has full/complete valence shell -8 valence electrons Group 18 or Noble Gases
What is Atomic Radius? The size of an atom.
What is Metallic Character? The characteristic of an element that relates to metals.
What is Ionization Energy? The amount of energy it takes to remove the highest energy electron from an atom (to create a +1 charge)
What is Electonegativity? The ability of an element's atom to attract electrons
From bottom left to top right of the periodic table, which trends increase? Atomic Radius and Metallic Character (RACK EM! R-A-C-M is going down.)
From top right to bottom left of the periodic table, which trends decrease? Atomic Radius and Metallic Character (RACK RACK RACK-EM! R-A-C-M is going down.)
What are ions? Charged particles that can be negative or positive.
Metals form what type of ions? Cations
Nonmetals form what type of ions? Anions
______ (Positive or Negative) ions are smaller. Positive +
______ (Positive or Negative) ions are larger. Negative -
What do ions form to obtain? An octect. (Full outermost energy level of 8 valence electrons.)
A nuetral atom's Atomic # is equal _______ # which is also equal to Electron #. Proton
Why do atoms lose valence electrons? To form ions and/or get a full outermost energy level.
Why are fewer energy levels used when making ions? Ions take electrons to make an even outermost energy so it's spread across less energy levels which makes it a smaller element.
Non-metals tend to ____ (gain or lose) electrons. Why? Gain They are less likely to use ionization energy; they want to to fill their outermost energy level.
Metals tend to _____ (gain or lose) electrons? Why? Lose Because they are more likely to use ionization energy because they want to give up electrons to have equal outermost energy levels.
What is Successive Ionization Energy? Energy that takes from levels beyond the outermost level of valence electrons.
If an element has a high metallic character, it is ______ (unwilling/willing) to give up electrons. Willing.
What is shielding? When an atom is trying to pull in an electron but because of many electrons already in the way (due to energy levels/periods) it can not put it tight.
What is isoelectric? When ions electrons equal to a nuetral atom and they are alike.
Created by: lauraelzarad



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