People(ch. 6)
First French Scientist to compose a list of 33 elements in a table with 4 categories
Antoine Lavoisier
Boxes are arranged in a series of columns which are called
Groups
As you move left to right what happens to atomic radii
There is a decrease
A single covalent bond is called a
Sigma bond
The electrostatic force that holds oppositely charged particles together in an ionic compound
Ionic bond
Noticed periodic repetition calling it the law of octaves
Jhon Newlands
Rows on the periodic table are called
Periods
Ionization energy does what as you move down a group?
It Decreases
Multiple covalent bonds are called
Pi bonds
Ionic compounds are between what two elements
A metal and nonmetal
These two scientists demonstrated a connection between atomic mass an elemental properties, but this one is giving more credit.
Mendeleev
Elements in group 1, 2, 13-18 are called
Representative elements
Increases
Strength of Covalent bonds depends on
Distance between the bonded nuclei
In a ionic bond electrons are
Transferred
Arranged periodic table by atomic number(periodic law)
Henry Moseley
Elements in group 3-12 are called
Transition elements
Does the left of right side of the periodic table form smaller ions
Left
The amount of energy needed to break a covalent bond is called
Bond-dissociation energy
When naming an ionic compound you always write what first
The cation
Discovered that atoms have a unique number of protons called atomic numbers
Henry Moseley
Group one(excepts hydrogen) is known as
Alkali metals
Ionization energy does what as you go let to right
Increases
A ____ reaction occurs when a greater amount of energy is needed to break an existing bond
Endothermic
The strong attraction between positive and negative ions in a ionic compounds results in the formation of
Crystal lattice