Concept explainers
Interpretation:
Out of the compounds
Concept Introduction:
The dissociation energy is a parameter that allows one to estimate the strength of bond formed. It is essentially the energy required to cleave and separate two atoms. It varies with several factors such as size, multiplicity, and number of unshared electron pairs. If the size of atoms is large bond strength is weak, consequently bond length is more compared to bond formed between smaller atoms. If bond is higher-order as in case of double or triple
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
CHEMICAL PRINCIPLES (LL) W/ACCESS
- (a) Methane (CH4) and the perchlorate ion (ClO4- ) are bothdescribed as tetrahedral. What does this indicate about theirbond angles? (b) The NH3 molecule is trigonal pyramidal, while BF3 is trigonal planar. Which of these molecules is flat?arrow_forwardConsider the molecules SCl₂, F₂, CS₂, CF₄, and BrCl.(a) Which has bonds that are the most polar?(b) Which have a molecular dipole moment?arrow_forwardThe structural formulas for ethanol, CH3CH2OH, and propene, CH;CH=CH,2, are нн H Н—С—С—0—н H-C-C=C-H нн H H H Ethanol Propene (a) Complete the Lewis structure for each molecule showing all valence electrons. (b) Using the VSEPR model, predict all bond angles in each molecule.arrow_forward
- . Assume that the third-period element phosphorus forms a diatomic molecule, P2, in an analogous way as nitrogen does to form N2. (a) Write the electronic configuration for P2. Use [Ne2] to represent the electron configuration for the first two periods. (b) Calculate its bond order. (c) What are its magnetic properties (diamagnetic or paramagnetic)?arrow_forwardPropylene, C3H6,C3H6, is a gas that is used to form the important polymer called polypropylene. Its Lewis structure is (a) What is the total number of valence electrons in the propylene molecule? (b) How many valence electrons are used to make σσ bonds in the molecule? (c) How many valence electrons are used to make ππ bonds in the molecule? (d) How many valence electrons remain in nonbonding pairs in the molecule? (e) What is the hybridization at each carbon atom in the molecule?arrow_forwardMethyl isocyanate, CH3NCO, was made infamous in 1984when an accidental leakage of this compound from a storagetank in Bhopal, India, resulted in the deaths of about3800 people and severe and lasting injury to many thousandsmore. (a) Draw a Lewis structure for methyl isocyanate.(b) Draw a ball-and-stick model of the structure,including estimates of all the bond angles in the compound.(c) Predict all the bond distances in the molecule.(d) Do you predict that the molecule will have a dipolemoment? Explain.arrow_forward
- How many nonbonding electron pairs are there in each ofthe following molecules: (a) (CH3)2S, (b) HCN, (c) C2H2,(d) CH3F?arrow_forward(a) How does a polar molecule differ from a nonpolar one? (b) Atoms X and Y have different electronegativities. Will the diatomic molecule X—Y necessarily be polar? Explain. (c) What factors affect the size of the dipole moment of a diatomic molecule?arrow_forwardIn the following compounds, the C atoms form a single ring.Draw a Lewis structure for each compound, identify cases for which resonance exists, and determine the carbon-carbon bondorder(s): (a) C₃H₄; (b) C₃H₆; (c) C₄H₆; (d) C₄H₄; (e) C₆H₆.arrow_forward
- There are two main types of covalent bond breakage. In ho-molytic breakage , each atom in the bond gets one of the shared electrons. In some cases, the electronega-tivity of adjacent atoms affects the bond energy. In heterolytic breakage, one atom gets both electrons and the other gets none;thus, a cation and an anion form. (a) Why is the C−C bond in H₃C−CF₃(423 kJ/mol) strongerthan that in H₃C−CH₃(376 kJ/mol)?(b) Use bond energy and any other data to calculate the heat ofreaction for the heterolytic cleavage of O₂.arrow_forwardPredict whether each of the following molecules has a dipole moment: (a) BrCl, (b) BF3, (c) CH2Cl2.arrow_forwardConsider the molecules BF₃, PF₃, BrF₃, SF₄, and SF₆.(a) Which has bonds that are the most polar?(b) Which have a molecular dipole moment?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning