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Stegall-Chem(206)-#8

Periodic Table

QuestionAnswer
What does the Atomic Number of an element represent? The # of Protons.
Where can you find the Atomic # on the Periodic Table. Large # in each element's square.
What does the # of Protons identify? The element. Each element has its own unique # of protons. If the # of Protons changes the identity of the element changes.
How is the Atomic Mass determined? # of Protons + # of Neutrons.
In an atom of neutral or balanced electrical charge, how many electrons are there? # of Protons (+) = # of Electrons (-)
Where on the Periodic Table can you find the Atomic Mass of an element? The small decimal #, usually written below the name of the element.
Where on the Periodic Table can you find the # of Shell Energy Levels? The # of electrons are the small #s written on the right side of each square in their Shell Energy Level.
Where on the Periodic Table can you find the # of Valence electrons? Valence electrons are the electrons in the outermost Shell Energy Level or the last Shell Energy Level listed on the right side of each element square.
What are the names of the rows (left to right) on the Periodic Table? Periods
What do Periods have in common? Each Period has the same # of Shell Energy Levels.
What are the columns (top to bottom) on the Periodic Table called? Groups
What do the groups have in common? Each Group has the same # of Valence electrons in its outermost Shell Energy Level.
What is the name of Group 1A? Alkali Metals
Where is the Alkali Metal Group (1A) located on the Periodic Table? Far left top to bottom.
How many Valence electrons are a property of the Alkali Metal group (1A)? 1 Valence electron.
What is the name of Group 2A on the Periodic Table? Alkaline Earth Metals.
Where is the Alkaline Earth Metal group located on the Periodic Table? Second column from the left of the Periodic Table.
How many Valence electrons do Alkaline Earth Metal elements have? 2 Valence electrons.
What is the name of the elements in groups 3A, 4A, 5A, & 6A? Non-Metals.
Where are the Non-Metals groups found on the Periodic Table? right of center.
What is the name of group 7A on the Periodic Table? Halogens
Where is the Halogen group located on the Periodic Table? Second column from the right.
How many Valence electrons are common to the Halogen group? 7 Valence electrons.
What is a common property of elements in the Halogen group? The elements in the Halogen group form diatomic molecules by sharing an electron.
What is the name of Group O on the Periodic Table? Noble Gases
Where is the Noble Gas Group located on the Periodic Table? Column to the far right of the Periodic Table.
What is a common property of elements in the Noble Gas group? Noble gas elements do not usually participate in chemical reactions because their outermost shell energy level is filled with 8 electrons.
What is "Ground State"? Ground State is the lowest energy state of level of an electron.
What is "Excited State"? Excited State is the highest energy level or state of an electron.
What do electrons in transition from excited state to the ground state emit? Electrons moving from the excited state to the ground state are losing energy and emitting light called Atomic Emission Spectrum. -Each elements has its own unique Emmission Spectrum.
Quantum? amount of energy needed to raise the energy level of an electron from the ground state to the excited state.
Photon? the amount of energy released when an electron moves from the excited state to the ground state.
Ionization? the removal of an electron from an atom. -the tendency of an atom to lose an electron.
Ionization Energy? the amount of energy absorbed by the electron in order for it to be removed from an atom.
Electronegativity? the tendency of an atom to gain as electron when reacting with another element.
Atomic Radius? the size of the nucleau of an atom.
Nuclear charge? the electrical charge of the nucleus of an atom. - the # of protons.
Periodic Trend of Ionization Energy? -Increases left to right. -Decreases top to bottom.
Periodic Trend of Electronegativity? Increases left to right. -Decreases top to bottom.
Periodic Trend of Atomic Radius? -Decreases left to right. -Increases top to bottom.
Periodic Trend of Nuclear Charge? -Increases left to right. -Increases top to bottom.
Created by: kastega
 

 



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