Chapter 6 (new) Flashcards
lowercase delta
partial charges are denoted by…
Carbon tends to have a formal charge of zero with ___ bonds and ___ lone pairs.
Electronegativity decreases down a group and increases across a period.
Electronegativity ___ down a group and ___ across a period.
Period 2
Elements located where, in the p-table, cannot have expanded octets?
Peripheral atoms
When creating a lewis structure, which atom(s) get electrons first after the skeletal structure is drawn?
Lewis Structures
Method of modeling molecular structure that does not directly take into account how electrons are shared.
Nonpolar Covalent Bond
Covalent bond in which the electrons are shared equally.
On the more electronegative atom
In formal charge analysis, where do we want the negative formal charge if possible?
Single Bond
Covalent bond in which two electrons are shared.
Expanded Octets
Elements that require going beyond the octet.
Only when told to do so
Should you expand an octet to minimize formal charges?
minor contributor
A lewis structure that contributes less to the resonance hybrid
net charge of the molecule/ion
The sum of a molecule’s formal charges must equal…
Partial Charges or Dipole arrows
Polar bonds are denoted by…
FC = Valence electrons - (lines + dots)
Formal Charge equation
A measure of the charge separation between two charges.
Oxygen tends to have a formal charge of zero with ___ bonds and ___ lone pairs.
Nitrogen tends to have a formal charge of zero with ___ bonds and ___ lone pairs.
Fluorine tends to have a formal charge of zero with ___ bonds and ___ lone pairs.
Electronegativity Difference
Bond type is determined by…
d orbitals
Where do elements with expanded octets store their additional electrons?
Hydrogen
Which element has a relatively high electronegativity compared to its surroundings on the periodic table?
