CHEM 1150 Lecture Notes - Lecture 9: Chemical Polarity, Valence Electron, Ionic Compound

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18 May 2017

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The energy required to completely separate one mole of a solid ionic compound into. Consists of the symbol of an element and one dot for each valence electron in an atom of the element. The electrostatic force that holds ions together in an ionic compound. The potential energy (e) between two ions is directly proportional to the product of their charges and inversely proportional to the distance of separation between them. Relates lattice energies of ionic compounds to ionization energies, electron afinites, and other atomic and molecular properties. A bond in which two electrons are shared by two atoms. Representation of covalent bonding in which shared electron pairs are shown either as lines or as pairs of dots between two atoms, and lone pairs are shown as pairs of dots on individual atoms. Pairs of valence electrons that are not involved in covalent bond formation.

Related Questions

Match the following terms with their definitions:

chemical bonds

[ Choose ] a stable attraction between two or more atoms the bonds in a ion a representation of an atom's valence electrons shared valence electrons between atoms bonds between chemicals full electron transfer leading to charge-charge attraction an elemental symbol with some dots around it the sharing of all electrons between two atoms

covalent bonds

ionic bonds

Lewis structure

Submit your answer to the following in complete sentences, providing your choice, your evidence, and your reasoning as indicated below.

Which two of the elements listed have the most similar Lewis structures?

A) S and Se

B) Si and P

C) Al and Ge

D) Rb and Ca

Which of the following correctly describes the Lewis structure of the compound formed between Mg and Cl?

A) The one Mg will have a negative charge and eight dots around its symbol, whereas the two Cl symbols will have a positive charge and no dots around the symbol.

B) The one Mg will have a positive two charge and no dots around its symbol, whereas the two Cl symbols will have a negative charge and eight dots around the symbol.

C) The one Mg will have a positive charge and no dots around its symbol, whereas the one Cl will have a negative charge and eight dots around its symbol.

D) The one Mg will have a negative charge and no dots around its symbol, whereas the two Cl symbols will have a positive charge and eight dots around the symbol.

In the Lewis structure for a molecule, one of the nitrogen atoms shares six electrons with a carbon atom and has two electrons that it does not share with any other atom. Which of the following correctly describes this nitrogen atom?

A)three single bonds and one lone pair

B)three single bonds and two lone pairs

C)triple bond and two lone pairs

D) triple bond and one lone pair

Under which of the following circumstances would the molecular geometry be the same as the electron geometry?

A) identical terminal atoms

B) no lone pairs on the central atom

C) presence of multiple bonds on the central atom

D) presence of lone pairs on the central atom

(2 points) Referring to the reading, "The Lewis Structure of Ozone," describe why the two Lewis structures shown are incorrect.

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CHEM 1150 Lecture Notes - Lecture 9: Chemical Polarity, Valence Electron, Ionic Compound

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