Molecular Polarity and electron configurations Flashcards
Three things that determine molecular polarity
- bond polarity
- outside atoms
- molecular shape
diatomic molecules
molecules with only two atoms; the electronegativity difference will determine molecular polarity
Electronegativity
a measure if how much an atom attracts an electron
The higher the electronegativity…
the greater the atom’s attraction for electrons
Atoms that become negative ions..
have a greater electronegativity than atoms that become positive ions
When is a bond covalent?
when two atoms have shared electrons and similar electronegativities
When is a bond ionic?
when the electronegativities have a bigger difference
In an ionic bond, the difference in electronegativities between the two bonding atoms is greater than the difference in a covalent bond
True
Polar covalent bond
a covalent bond in which the electrons are not shared equally by the two atoms involved in the bond
What is partially positive?
since electrons are more attracted to partially negative atoms, there is a shift of electrons density towards those atoms, thus becoming partially positive
What is partially negative?
Ina covalent bond, the distance of the center of gravity of an electron is not the same distance from one nucleus, so that is why it is partially charged. Electrons in an element are more attracted to partially negative atoms
Dipole
a molecule that is a polar molecule
Energy levels of the atoms correspond to..
the rows of he table
Aufau principle
start at the lowest energy level and build up to the higher energy levels only after the lowest are filled
orbitals
a region of probability in which an electron can be found
