LEWIS STRUCTURE
Diagrams that show the bonding between atoms of a molecule, as well as the lone pairs of electrons that may exist in the molecule.
What are lewis structures?
To represent _____ bonding, we move electron dots from the Lewis symbol of the metal to the Lewis symbol of the nonmetal and allow the resultant ions to form a crystalline lattice composed of alternating cations and anions.
What is ionic?
Neighboring atoms depicted as sharing some (or all) of their valence electrons in order to attain octets (or duets for hydrogen).
What is covalent bonding lewis structure?
A theory that allows for prediction of the shapes of molecules based on the idea that electrons- either as lone pairs or bonding pairs- repel one another.
What is VESPR?
The molecular geometry of six atoms with 120° bond angles between the three equatorial electron groups and 90° bond angles between the two axial electron groups and the trigonal plane.
What is trigonal bipyramidal geometry?
1. Write the correct skeletal structure
2. Calculate the total number of electrons for the lewis structure by summing the valence electrons of each atom in the molecule.
3. Distribute the electrons among the atoms, giving octets to as many atoms as possible.
4. If any atom lacks an octet, form double or triple bonds as necessary to give them octets.
What are the steps for writing a lewis dot structure?
The formation of an ionic compound from its constituent elements is usually quite ______.
What is exothermic?
A pair of electrons shared between two atoms.
What is bonding pair?
For molecules having just one interior atom (the central atom), molecular geometry depends on these two factors.
What is the number of electron groups around the central atom and how many of those electron groups are bonding groups and how many are lone pairs?
The arrangement of electron groups.
What is electron geometry?
What is polyatomic?
The energy associated with forming a crystalline lattice from gaseous ions.
What is lattice energy?
A pair of electrons associated with only one atom.
What is a lone pair?
The molecular geometry of three atoms with a 180° bond angle due to the repulsion of two electron groups.
What is Linear Geometry?
The three-dimensional arrangement of the atoms that constitute a molecule. It includes the general shape of the molecule as well as bond lengths, bond angles, torsional angles and any other geometrical parameters that determine the position of each atom.
What is molecular geometry?
A set of two or more Lewis Structures that collectively describe the electronic bonding a single polyatomic species including fractional bonds and fractional charges.
What is resonance structure?
Applies Hess's law to calculate the lattice enthalpy by comparing the standard enthalpy change of formation of the ionic compound (from the elements) to the enthalpy required to make gaseous ions from the elements.
What is Born-Haber Cycle?
The bond that forms when two electrons are shared between two atoms.
What is a double bond?
The molecular geometry of four atoms with 120° bond angles in a plane.
What is trigonal planar geometry?
Each of the following counts as a single electron group: a lone pair, a single bond, a double bond, a triple bond, or a single electron (as in a free radical).
What is electron groups?
The concept of mixing atomic orbitals into new hybrid orbitals suitable for the pairing of electrons to form chemical bonds in valence bond theory.
What is hybridization?
As _____ increase as we move down the column, the ions cannot get as close to each other and therefore do not release as much energy when the lattice forms.
The bond that forms when three electron pairs are shared between two atoms.
What is a triple bond?
The molecular geometry of five atoms with 109.5° bond angles.
What is tetrahedral geometry?
The ______ of the electron groups is determined by their repulsions
What is geometry?