Skip to main content
Ch.10 - Chemical Bonding I: The Lewis Model
Tro - Chemistry: A Molecular Approach 6th Edition
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217Non è quello che usi tu?Cambia libro di testo
Tutti i libri di testoTro 6th EditionCh.10 - Chemical Bonding I: The Lewis ModelProblema 113b
Capitolo 10, Problema 113b

Draw the Lewis structure for each compound. b. H3PO3 (two OH bonds)

Guida verificata passo dopo passo
1
Count the total number of valence electrons in the molecule. Phosphorus (P) has 5 valence electrons, each hydrogen (H) has 1, and each oxygen (O) has 6. Since there are three hydrogens and three oxygens, the total number of valence electrons is 5 (from P) + 3 (from H) + 18 (from O) = 26 valence electrons.
Place the least electronegative atom in the center, which is phosphorus in this case. Then, attach the oxygen and hydrogen atoms to the central phosphorus atom. Remember that two of the oxygens are bonded to hydrogen as OH groups.
Distribute the electrons around the atoms to complete the octets (or duet for hydrogen) while keeping in mind the total number of valence electrons. Each hydrogen will share two electrons, forming a single bond with oxygen. Each oxygen in the OH groups will form a single bond with hydrogen and a single bond with phosphorus.
Place any remaining electrons on the oxygen atoms to complete their octets. Oxygen typically needs 8 electrons to complete its octet, which includes shared and lone pairs.
Check the formal charges on each atom to ensure the most stable structure. The sum of the formal charges should equal the overall charge of the molecule, which is neutral in this case.

Risposta video verificata per un problema simile:

Questa soluzione video è stata consigliata dai nostri tutor come utile per risolvere questo problema.
Durata del video:
2m

Concetti chiave

Ecco i concetti essenziali che devi comprendere per rispondere correttamente alla domanda.

Lewis Structures

Lewis structures are diagrams that represent the bonding between atoms in a molecule and the lone pairs of electrons that may exist. They use dots to represent valence electrons and lines to represent bonds between atoms. Understanding how to draw Lewis structures is essential for visualizing molecular geometry and predicting the behavior of molecules in chemical reactions.
Video consigliato:
Percorso guidato
04:28
Lewis Dot Structures: Ions

Valence Electrons

Valence electrons are the outermost electrons of an atom and are crucial in determining how an atom bonds with others. The number of valence electrons influences the atom's ability to form bonds, either by sharing electrons (covalent bonds) or transferring them (ionic bonds). For H3PO3, knowing the valence electrons of hydrogen, phosphorus, and oxygen is key to constructing its Lewis structure accurately.
Video consigliato:
Percorso guidato
02:12
Transition Metals Valence Electrons

Molecular Geometry

Molecular geometry refers to the three-dimensional arrangement of atoms within a molecule. It is influenced by the number of bonds and lone pairs around the central atom, which can affect the molecule's reactivity and properties. In the case of H3PO3, understanding its geometry helps predict how it interacts with other molecules and its overall stability.
Video consigliato:
Percorso guidato
01:33
Molecular Geometry with Two Electron Groups
Pratica correlata
Domanda del libro di testo

If hydrogen were used as a fuel, it could be burned according to this reaction: H2(g) + 1/2 O2(g) → H2O(g) Which fuel yields more energy per gram?

828
views
Domanda del libro di testo

The azide ion, N3-, is a symmetrical ion, all of whose contributing resonance structures have formal charges. Draw three important contributing structures for this ion.

2357
views
Domanda del libro di testo

Draw the Lewis structure for each compound. c. H3AsO4

1206
views
Domanda del libro di testo

If hydrogen were used as a fuel, it could be burned according to this reaction: H2(g) + 1/2 O2(g) → H2O(g) Which fuel yields more energy per mole?

384
views
Domanda del libro di testo

If hydrogen were used as a fuel, it could be burned according to this reaction: H2(g) + 1/2 O2(g) → H2O(g) Use average bond energies to calculate ΔHrxn for the combustion of methane (CH4).

756
views
Domanda del libro di testo

List the following gas-phase ion pairs in order of the quantity of energy released when they form from separated gas-phase ions. List the pair that releases the least energy first. Na+ F-, Mg2+F-, Na+O2-, Mg2+O2-, Al3+O2-.

1410
views
1
comments