Chem 5.3-5.4 Flashcards
Effective nuclear charge
The positive charge that valence electrons actually feel from the nucleus. Tell ps how truly attracted valence electrons are to the nucleus
Atoms in the same period have the same number of ________________ and _______________
Core electrons and energy levels
The greater an atom’s zeff, the __________ the atom is
Smaller
Left to right across a row in the periodic table, atoms get
Smaller with a high zeff
If atoms are in the same group, they must have the same
Effective nuclear charge
As you move down a group the number of energy levels
Increase
The more energy levels an atom has, the __________ the atom is
Bigger
Top to bottom down a column, atoms get
Bigger
Ionization energy
The energy required to remove an atoms valence electrons
If an atom has a high I.E., its very _______ to remove a valence e
High
As you move left out right across a row, ionization energy
Increases
As you move top to bottom in a group, ionization energy
Decreases
As you move top to bottom in a group, atoms get
Bigger
Electronegativity
Measure of how much attraction an atom has for bonding electrons
Left to right across a period electronegativity
Increases
Top to bottom across a group, electronegativity ____________
Decreases
Metallic character
The ease with which an atom loses electrons
Low ionization energy
Nonmetallic character
The drive that an atom has to attract electrons
