Radius
Which of these elements has the largest atomic radius?
Al, Ca, K
Potassium
Which of these elements has the highest first ionization energy?
Oxygen or Fluorine
Fluorine
Which of these elements has the highest electronegativity?
Nitrogen or Lithium
Nitrogen
Which of these elements has the largest atomic radius?
Iron or Krypton
Krypton
Which of these elements has the lowest first ionization energy?
Sodium or Sulfur
Sodium
Which of these elements has the lowest electronegativity?
Sulfur or Sodium
Sodium
Define atomic radius
the distance from the nucleus to the edge of the atom
Define First Ionization Energy
The energy required to convert one mole of gaseous atoms into gaseous ions with a single positive charge.
Which of these elements has the highest electron affinity?
Iodine or Chlorine
Chlorine
What happens to atomic radius as you go ACROSS the periodic table?
the size DECREASES
What do successive ionization energies show?
Energy required to remove electrons one by one
Which of these elements has the lowest electron affinity?
Sulfur or Polonium
Polonium
Why does the atomic radius decrease as you go across the periodic table?
The added protons in the nucleus pull the added electrons more tightly to them, thereby shirking the atom.
In what two ways can ionization energies show electronic configuration?
Successive ionization energy for the same atom and first ionization energies for different atoms
As you move up and to the right on the periodic table:
atomic radius decreases and electronegativity increases