Atomic Radius
Describe the atomic radius trend moving left to right
The atomic radius decreases!
What is electronegativity?
Electron negativity is the tendency of an atom to attract a shared pair of electrons to its self.
What is Electron Affinity?
The change of energy of a neutral atom when an electron is added to the atom to form a negative ion!
What is Ionization?
The amount of energy required to remove an electron from an isolated atom or molecule.
What are the 4 major periodic trends?
Electronegativity, Ionization energy, Electron Affinity, and Atomic Radius!
Explain what happens to the atomic radius moving up to down.
The atomic radius has more energy level as you go down, resulting more inner electrons which repel the valence electrons away, creating a larger radius!
Describe the trend of Electronegativity moving up to down
It decreases
Describe the electron affinity moving left to right
It increases!
Ionization decreases as you move down!
Which one of the 4 periodic trends has an opposite trend from the others?
Atomic Radius
Is it true that the atomic radius of Lithium is larger than Barium?
True
Explain the trend of electronegativity moving left to right
the electron negativity increases because the number of protons increases which causes more shared pair of electrons to be attracted to the atom.
Explain the trend of electron affinity moving up to down
The electron affinity decreases because there more inner electrons which repel outer electrons, decreasing the likelihood of gaining an electron!
Describe the trend of ionization moving left to right
The ionization Increases!
What is Electron shielding?
Electron shielding is the blockage of valence electrons from the nucleus!
Explain the atomic radius trend when moving left to right.
As the atomic radius moves to the left, it decreases because protons are being added which makes the outer electrons more attracted to the nucleus!
What factors impact the electronegativity?
The number of protons and the distance between the nucleus and the valence electrons
Explain the trend of Electron affinity moving left to right
Electrons affinity increases because it gains more protons which causes more attraction pulling the electrons closer.
Explain the trend of ionization moving left to right
As you move to the right Ionization increases because more protons are added therefore needing more ionization to remove an electron.
Put the following elements in order from least to greats atomic radius: K, Fr, Au, Y
K, Y, Au, Fr
Put the following in order from smallest to largest atomic radius: Ni, Sr, Os, Si
Si, Ni, Os, Sr
Put the following elements in order from most electron negativity to least electronegativity:
Ti, Ag, Hg, Al
Al, Hg, Ag, Ti
Put the following elements in order from most to least electron affinity: C, Sn, Pb, Si
C, Si, Sn, Pb
Put the following elements in order from the least to greatest ionization: Nb, Au, Fe, I
Au, I, Nb, Fe
Which periodic trends follows the same periodic trend as Atomic radius?
Metal Reactivity!