Concept explainers
(a)
Interpretation:
The steric number of
Concept Introduction:
The molecular structure is a 3-dimensional representation of bond pairs around the central atom. It is also known as molecular geometry. Electron geometry is a 3-dimensional representation of bond pairs and lone pair around the central atom.
Shape corresponds to electron geometry and geometry corresponds to molecular geometry or structure.
(b)
Interpretation:
The steric number of
Concept Introduction:
The molecular structure is a 3-dimensional representation of bond pairs around the central atom. It is also known as molecular geometry. Electron geometry is a 3-dimensional representation of bond pairs and lone pair around the central atom.
Shape corresponds to electron geometry and geometry corresponds to molecular geometry or structure.
(c)
Interpretation:
The steric number of
Concept Introduction:
The molecular structure is a 3-dimensional representation of bond pairs around the central atom. It is also known as molecular geometry. Electron geometry is a 3-dimensional representation of bond pairs and lone pair around the central atom.
Shape corresponds to electron geometry and geometry corresponds to molecular geometry or structure.
(d)
Interpretation:
The steric number of
Concept Introduction:
The molecular structure is a 3-dimensional representation of bond pairs around the central atom. It is also known as molecular geometry. Electron geometry is a 3-dimensional representation of bond pairs and lone pair around the central atom.
Shape corresponds to electron geometry and geometry corresponds to molecular geometry or structure.
(e)
Interpretation:
The steric number of
Concept Introduction:
The molecular structure is a 3-dimensional representation of bond pairs around the central atom. It is also known as molecular geometry. Electron geometry is a 3-dimensional representation of bond pairs and lone pair around the central atom.
Shape corresponds to electron geometry and geometry corresponds to molecular geometry or structure.
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Principles of Modern Chemistry
- 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_forwardWhich of the following would you expect to have the highest bond energy (strength)? (a) 02 (b) Cl2 N₂ F2 3 (d)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
- 19. :O: || :0-N- O: Which of the following statements, if true, would support the claim that the NO3 ion, represented above, has three resonance structures? (A) The NO3 ion is not a polar species. (B) The oxygen-to-nitrogen-to-oxygen bond angles are 90°. (C) One of the bonds in NO3 is longer than the other two. (D) One of the bonds in NO3¯ is shorter than the other two.arrow_forwardHCI VIO 4. Draw the Lewis structures for the following: (a) K (b) Cl (d) Ca2 (c) O2 nolar and which U he T0IIOWINO would you preoarrow_forwardWhich of the following molecules or ions contain polar bonds?(a) O3(b) S8(c) O22−(d) NO3−(e) CO2(f) H2S(g) BH4−arrow_forward
- What are the electron-pair geometry and the molecular structure of each of the following molecules or ions?(a) ClF5(b) ClO2−(c) TeCl42−(d) PCl3(e) SeF4(f) PH2−arrow_forwardTwo substances with empirical formula HNO are hyponi-trous acid ( μ=62.04 g /mol) and nitroxyl (μ=31.02 g/mol).(a) What is the molecular formula of each species?(b) For each species, draw the Lewis structure having the lowestformal charges. (Hint:Hyponitrous acid has an N=N bond.)(c) Predict the shape around the N atoms of each species.(d) When hyponitrous acid loses two protons, it forms the hy-ponitrite ion. Draw cisand transforms of this ion.arrow_forwardDraw the Lewis structure for (a) NO+ ion, (b) C2H4.arrow_forward
- Write a Lewis structure for each of the following molecules and ions:(a) (CH3)3SiH(b) SiO44−(c) Si2H6(d) Si(OH)4(e) SiF62−arrow_forwardAmmonium chloride, NH4Cl, is a very soluble salt in water.(a) Draw the Lewis structures of the ammonium and chlorideions. (b) Is there an N—Cl bond in solid ammonium chloride?(c) If you dissolve 14 g of ammonium chloride in 500.0 mLof water, what is the molar concentration of the solution?(d) How many grams of silver nitrate do you need to add tothe solution in part (c) to precipitate all of the chloride as silverchloride?arrow_forwardAn important starting material for the manufacture ofpolyphosphazenes is the cyclic molecule (NPCl₂)₃. The mol-ecule has a symmetrical six-membered ring of alternating N and P atoms, with the Cl atoms bonded to the P atoms. The nitrogen-phosphorus bond length is significantly less than that expectedfor an N−P single bond.(a) Draw a likely Lewis structure for the molecule.(b) How many lone pairs of electrons do the ring atoms have?(c) What is the order of the nitrogen-phosphorus bond?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and PracticeChemistryISBN:9780534420123Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward MercerPublisher:Cengage Learning