2nd Period Periodic Table

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Group 1: Alkali Metals

Definition: 1 valence electron, very reactive; most reactive of metals Example: sodium,potassium

Group 2: Alkaline-Earth Metals

Definition: 2 valence electrons, very reactive, but less reactive than alkali metals Example: Alkaline-earth metal, any of the six chemical elements that comprise Group 2 (IIa) of the periodic table. The elements are beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).

Group 2: Alkaline-Earth Metals

Definition: 2 valence electrons, very reactive, but less reactive than alkali metals Example: Berylium , Magnesium, Calcium, ect

Group 2

Definition: 2 valence electrons; outer level Example: Some examples of some elements from Group two of the Periodic Table are Beryllium, Magnesium, Calcium, and Radium.

Group 2

Definition: 2 valence electrons; outer level Example: barium,radium

Group 2

Definition: 2 valence electrons; outer level Example: magnesium,calcium,radium,stontium

Group 13

Definition: 3 valence electrons, drop the "1" in double-digit group numbers Example: 3rd ionization energy - The energy required to remove a third electron from a doubly charged gaseous cation. For Example: Na2+(g) → Na3+(g) + e- I3 = 6913 kJ/mol

Group 13

Definition: 3 valence electrons, drop the "1" in double-digit group numbers Example: Aluminum

Group 17: Halogens

Definition: nonmetals, 7 valence electrons Example: Flourine

Group 17: Halogens

Definition: nonmetals, 7 valence electrons Example: fluorine, chlorine, bromine, iodine, astatine

Helium

Definition: part of noble gases, group 18, special like hydrogen because so small Example: Balloons have Helium in them to make them float.

Helium

Definition: part of noble gases, group 18, special like hydrogen because so small Example: What fills balloons

Helium

Definition: part of noble gases, group 18, special like hydrogen because so small Example: a balloon

Group 3-12: Transition Metals

Definition: properties vary widely but are metallic properties Example: Gold,Iron,Silver, and Copper

Group 3-12: Transition Metals

Definition: properties vary widely but are metallic properties Example: Transition metals are just about any element in Groups 3-12 in the Periodic Table. Examples: Iron (Fe), Gold (Au), and Cobalt (Co).

Group 3-12: Transition Metals

Definition: properties vary widely but are metallic properties Example: gold, zinc,silver

Lanthanides and Actinides Series

Definition: some transition metals from Periods 6 and 7 appear in two rows at the bottom of the periodic table, top row is the lanthanide series of Period 6; elements 57 (Lanthanum) to element 71 Example: Sm,Eu

Lanthanides and Actinides Series

Definition: some transition metals from Periods 6 and 7 appear in two rows at the bottom of the periodic table, top row is the lanthanide series of Period 6; elements 57 (Lanthanum) to element 71 Example: lathanum

Lanthanides and Actinides Series

Definition: some transition metals from Periods 6 and 7 appear in two rows at the bottom of the periodic table, top row is the lanthanide series of Period 6; elements 57 (Lanthanum) to element 71 Example: the two basic lines at the periodic ... scandium and yttrium

Lanthanides and Actinides Series

Definition: some transition metals from Periods 6 and 7 appear in two rows at the bottom of the periodic table, top row is the lanthanide series of Period 6; elements 57 (Lanthanum) to element 71 Example: thorium, neodynium, uraniun, holmiun, ect

Group 18: Noble Gases

Definition: unreactive nonmetals, full outer electron orbit - 8 electrons in the outer level Example: Helium

Group 18: Noble Gases

Definition: unreactive nonmetals, full outer electron orbit - 8 electrons in the outer level Example: Noble Gases

Group 18: Noble Gases

Definition: unreactive nonmetals, full outer electron orbit - 8 electrons in the outer level Example: helium, neon, argon, krypton, xenon, radon

Hydrogen

associated with alkali metals because of only 1 valence electron; except nonmetal, so small only has 1 electron total so only one electron level, very reactive just like alkali metals

Group Number

number at the top vertical columns and tells the number of valence electrons of an atom


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