PT History
The Father of the Periodic Table
Mendeleev
Group A
Representative elements
The bigger atom out of K and Br
K
Definition of ionization energy
the amount of energy it takes to remove an electron from an atom in gaseous state
Define electronegativity
The ability of an atom to attract electrons to itself when chemically combined with another atom
How the first periodioc table was arranged
By increasing atomic mass
Group B
Transition metals
The smaller atom out of Mg and Ra
Mg
Group trend for ionization energy
Decreases as you go down the group
Most electronegative element
Fluorine
The peroson that developed the modern periodic table
Mosley
Group 2 or 2A
alkaline earth metals
Metals tend to for this type of ion (correct name)
cations
Period trend for ionization energy
It increases as you go across a period
This group does not generally have electronegativity values
Group 18 or 8A or noble gases
How the modern periodic table is arranged
increasing atomic number
Group 17 or 7A
Halogens
Anions are __________ than the atom from which they formed
bigger
Larger ionization energy between Cr and Ta
Cr
Element with the higher electronegativity out of Cl and I
Cl
Another name for a gropup on the periodic table
family
Two rows at the bottom of the periodic table
Inner transition metals
Which is bigger Ca+1 or Ca+2
Ca+1
Smaller ionization energy between Si and Cl
Si
Element with the lower electronergativity out of Ni and Pt
Pt