History of PTable
Known as the "Father of Chemistry"
Who is Lavoisier?
Under certain conditions, these elements can behave like a metal or non-metal
What are metalloids?
What is 1?
Negative ion and positive ion
What is a anion and a cation?
Largest atomic radius: Be, Ca, Sr, Ra
What is radium (Ra)?
Observed the Law of Octaves
Who is Newlands?
This group makes up most of the periodic table and is located on the left side of the periodic staircase
What are metals?
This group includes Be, Mg, Ca, Sr, Ba, and Ra
What are alkaline earth metals?
The outermost electrons of an atom
What are valence electrons?
Highest ionization energy: Te, Se, S, O
What is Oxygen (O)?
Who is Moseley?
This group is located in the middle of the periodic table
What are transition metals?
Do not naturally bond with other elements
What are noble gases?
Nonmetals that are close to 8 valence electrons have ______ ionization energy
What is high?
Highest metallic reactivity: Fr, Ba, Y, Ti
What is Francium (Fr)?
Who is Newlands and Mendeleev?
This group includes rare earth elements and radioactive elements
What are inner transition metals?
Most likely to bond with an alkali metal to form a salt
What are halogens?
Nonmetals with the highest ____________ have the highest nonmetallic reactivity.
What is electronegativity?
The atomic radius decreases from ______ to ______ across the periodic table
What is left to right?
Studied reactivity, similar physical and chemical properties, and atomic mass to organize a table with gaps for undiscovered elements
Who is Mendeleev?
This group represents each category of metals, nonmetals, and metalloids; as well as each state of matter (solids, liquids, gases)
What are representative elements?
The most reactive group of metals
What are alkali metals?
The reason atoms gain/lose electrons for a full valence shell
What is the octet rule?
This group (name) has the lowest electronegativity on the periodic table
What are noble gases?