Concept explainers
(a)
Interpretation:
Electron-region geometry and the molecular geometry of
Concept Introduction:
Lewis structures are diagrams that represent the
Electron geometry is the shape of a molecule predicted by considering both bond electron pairs and lone pair of electrons.
Molecular geometry is the shape of a molecule predicted by considering only bond pair of electrons
Geometry of different type of molecules with respect to the number of electron pairs are mentioned below,
(b)
Interpretation:
Electron-region geometry and the molecular geometry of
Concept Introduction:
Refer to (a).
(c)
Interpretation:
Electron-region geometry and the molecular geometry of
Concept Introduction:
Refer to (a).
(d)
Interpretation:
Electron-region geometry and the molecular geometry of
Concept Introduction:
Refer to (a).
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Chemistry: The Molecular Science
- Write all resonance structures of chlorobenzene, C6H5Cl, a molecule with the same cyclic structure as benzene. In all structures, keep the CCl bond as a single bond. Which resonance structures are the most important?arrow_forward18.) Choose all the statements that are correct. (1) Like atomic size, electronegativity decreases going across a period and increases going down a group. (2) The second most electronegative element is chlorine. (3) Electronegativity is directly proportional to atomic number. (4) Like ionization energy, electronegativity increases going across a period and decreases going down a group. (5) Electronegativity is a measure of the ability of an atom to attract electrons and form a negative ion. (6) Electronegativity is a measure of the ability of an atom in a molecule to attract electrons go itself. (7) Electronegativity was first proposed by Linus Pauling. Group of answer choices (2) (1) (4) (3) (5) (7) (6)arrow_forwardWrite Lewis structures for the following molecules or ions. (Assign lone pairs, radical electrons, and atomic charges where appropriate.) (a) BrF3 (b) AsF5 (c) BI3 (d) AsF6−arrow_forward
- Answer the following questions that relate to the chemistry of nitrogen. (a) Two nitrogen atoms combine to form a nitrogen molecule, as represented by the following equation. 2 N(g) ® N2(g) Using the table of average bond energies below, determine the enthalpy change, AH, for the reaction. Average Bond Energy (k) mol-1) Bond N-N 160 N=N 420 N°N 950 (b) The reaction between nitrogen and hydrogen to form ammonia is represented below. N2(g) + 3 H2(g)® 2 NH3(g) AH° = -92.2 kJ Predict the sign of the standard entropy change, AS', for the reaction. Justify your answer. (C) The value of AG° for the reaction represented in part (b) is negative at low temperatures but positive at high temperatures. Explain.arrow_forwardChemical species are said to be isoelectronic if they have the same Lewis structure (regardless of charge). Consider these ions and write a Lewis structure for a neutral molecule that is isoelectronic with them. (a) CN–, (b) NH4+ (c) CO3 2–arrow_forwardWhich of these statements about resonance is true?(a) When you draw resonance structures, it is permissibleto alter the way atoms are connected.(b) The nitrate ion has one long N¬O bond and two shortN¬O bonds.(c) “Resonance” refers to the idea that molecules areresonating rapidly between different bonding patterns.(d) The cyanide ion has only one dominant resonancestructure.(e) All of the above are true.arrow_forward
- 3) The molecule diphosphorus tetraoxide (P,O,) has two central atoms and four different resonance structures that do not violate the octet rule. Draw two of these resonance structures below. 4) The compound acetone is a common solvent. It has a chemical formula of CH,COCH, Acetone has three central atoms. (a) Draw the Lewis Dot structure for acetone. (b) Give the Ideal Bond Angle for all three central atoms. 5) Four covalent molecules are drawn below. :o: H. H-CH H H (1) (2) (3) (4) a) Define each of these molecules as polar or non-polar. (1) (2) (3) b) Describe the type of intermolecular force that each molecule would use: (1) (2) (3) (4)arrow_forwardThese species do not obey the octet rule. Draw a Lewis structure for each, and state the type of octet-rule exception:(a) PF₆(b) ClO₃(c) H₃PO₃(one P−H bond)arrow_forwardHow many nonbonding pairs (or lone-pairs) of electrons are found on the central atom in the Lewis structure of XeF2 molecule? (A) 0 (B) 1 (C) 2 (D) 3arrow_forward
- Write Lewis structures for the following molecules or ions. (Assign lone pairs, radical electrons, and atomic charges where appropriate.) (a) SbO43− (b) ICl6− (c) SO32- (d) HOBrOarrow_forwardBoth aluminum and iodine form chlorides, Al₂Cl₆ and I₂Cl₆ ,with “bridging” Cl atoms. The Lewis structures are (a) What is the formal charge on each atom? (b) Which of these molecules has a planar shape? Explain.arrow_forwardDraw the resonance forms that fit the octet rule for the metaphosphate ion, PO 3 – . (a) How many sigma bonds are there? How many pi bonds? (b) What is the phosphorus-oxygen bond order? (c) Arrange the following species in order of decreasing P-O bond strength (strongest first, weakest last). PO 4 3– , PO 2 – , PO + , PO 3arrow_forward
- Chemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage LearningChemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning