Chemical Bonding Questions and Answers

Order the following species with respect to carbon oxygen bond length longest to shortest CO CO2 CO32 CH OH What is the order from the weakest to the strongest carbon oxygen bond CH3OH exists as H3 C C Express your answers as chemical formulas separated by a comma From longest to shortest C O bond From weakest to strongest C O bond

Starch is composed of monosaccharide units bonded together via bonds

Which solid has the highest melting point Cu Fe not enough information Si

Calculate the lattice energy of ionic solid MX given the following thermodynamic data M s X2 g MX s AHran 579 kJ M s M g AHran 82 kJ Bond energy of X2 108 kJ mol lonization energy for M s 465 kJ mol Electron affinity of X 319 kJ mol Enter your answer in decimal notation rounded to the appropriate number of significant figures Answer Enter Value kJ mol

What is the molecular geometry of the molecule below Fc

What is the electron geometry of the compound below F Ec 0 a Linear b Trigonal Planar Od Tetrahedral Od Trigonal bipyramidal

Complete the following table Some polyatomic ions name bromate anion 0 nitrate anion chemical formula 0 CN H o 09 X

Which of the following would be expected to be the most soluble in water O cyclohexane ethyl alcohol H H H H H H H H C H O not possible to decide H H H H H H H 0 H

Write the name for the compound Spelling counts N O5

Label the molecular shape around each of the central atoms in the amino acid glycine H H H H O O Kent H bent Answer Bank trigonal planar tetrahedral trigonal pyramidal linear

The three dimensional structure of a molecule is given Identify the formula and name of the molecule formula

The H ion according to MO theory has a bond order of 0 0 O 0 5 O 1 0 1 5

The solubility of calcium sulfide in water is 0 204 grams per liter If a calcium sulfide solution had a concentration of 0 141 grams per liter it would be said to be

Again using sketches describe all the bonds in hydrogen cyanide H CEN What is the single best description c C bond O The H C bond is a 0 bond formed by overlap of an s orbital on H and an sp orbital on C The H C bond is a bond formed by overlap of an s orbital on H and an p orbital on C O The H C bond is a O The H C bond is a None of these bond formed by overlap of an sp orbital on H and an p orbital on C bond formed by overlap of an sp orbital on H and an sp orbital on C What is the likeliest H C N bond angle in HCN 90 109 5 120

Based on the electron configuration of the two atoms predict the ratio of metal cationic atom to nonmetal anionic atom in the compound 1s 2s 2p63s 1s 2s 2p 3s 3p4 Magnesium Sulfur A 1 1 B 1 2 C 2 1 D 3 1

Explain the observed trend in the boiling points of the compounds listed Compound Boiling Point H Te 2 C 41 5 C 60 7 C 100 C H Se H S H O Why water is atypical Water has exceptionally strong dipole dipole forces Water has exceptionally strong London dispersion forces Water dissociater to form ions whereas the others do not Water has the ability to form hydrogen bonds whereas the others cannot

Which substance has dipole dipole forces A B C D A D OC OF2 Cl2 CH4 CS

Explain why He2 does not exist but H does Select all true statements The bond order in H is 1 O There is no net bonding in He2 O The filled antibonding orbital cancels the filled bonding orbital in H O The filled antibonding orbital cancels the filled bonding orbital in He The bond order in He2 is 0 The bond order in H is 0 The bond order in Hea is 1

Determine the number of valence electrons for each of the atoms Enter each answer as a numeral For example if an atom has two valence electrons enter the number 2 B Si

Which of the following would be expected to be the least soluble in water Opotassium cyanide KCN O butane CH3CH CH CH3 O not possible to decide

6 a What is the geometry around the carbons with two single bonds and one double bond e g vinyl chloride The bonds are in three directions In the molecule the bonds around a carbon are in same plane and the angles between them are about 120 b How does this geometry differ from that of a carbon with the tetrahedral arrangement

Complete the electron configuration for Al electron configuration Ne

Write a chemical equation representing the first ionization energy for lithium Use e as the symbol for an ele chemical equation

Determine the geometry and shape for SO3 Geometry Shape

Balance the equations by inserting coefficients as needed equation 1 2PC1 2C1 2PCI Incorrect equation 2 Mg N 6HCI 3MeCl 2NH

Tap to select or deselect answer CO2 and C H8O2 O C3O2 and HO O C3O2 and H O O CO2 and H O O C302 and H8O2

2 How many carbon atoms and how many hydrogen atoms does the following molecule have carbon atoms and hydrogen atoms

What is the formal charge on each atom in the structure below 0 N S O N

A molecule is formed from one atom of hydrogen one atom of nitrogen and three atoms of oxygen What are the formal charges on the following atoms in the preferred Lewis structure of this molecule FCH

What is the dominant force holding the units together in solid carbon dioxide London O Dipolar Olonic bonding O Covalent bonding

What kind of intermolecular forces act between a hydrogen bromide molecule and a chloromethane (CH,CI) molecule? Note: If there is more than one type of intermolecular force that acts, be sure to list them all, with a comma between the name of each force.

It is thought that the strongest intermolecular forces between molecules of NO are Hydrogen bonds Dipole-dipole interactions lonic bonds London forces lon-dipole forces

Which molecules exhibit only London (dispersion) forces? Br₂ CH₂F NH3 BCl3 CH4

Which of the following molecules can hydrogen bond? NF3 H₂S HCI NCl3 NH3

Indicate the bond polarity (show the partial positive and partial negative ends) in the following bonds. (The tail of the arrow indicates the partial positive end of the bond dipole.)

Give the oxidation state of the metal species in each complex. [Co(NH3)5CI]CI: [Ru(CN)(CO)4]-:

Construct the octahedral crystal-field splitting diagram for the metal in each species. V(H₂O)6³+ Fe(CN)64- FeCl63-

Which formula is most likely for a compound of sodium, Na, and phosphorous, P? NaP NaP3 Na3P Na3P3

What is the correct Lewis dot structure for water? H:O:H H:O:H H:O:H H:O:H

Unlike soap, which is ionic, some liquid laundry detergents are neutral molecules. Explain how the following molecule behaves like soap and cleans away dirt. The molecule serves as a catalyst so the dirt and water can bond directly. The molecule ionizes readily. The molecule displaces the dirt by bonding to the clothing. The molecule has a highly polar end and a nonpolar tail.

Initial amount (at t=0), A. (The simulation uses "N=_ Time elapsed, t (In seconds, what time did you pause the simulation?) "for the amount at a given time) Amount after time has passed, A (The simulation uses "N=_ "for the amount at a given time) h = t-log (0.5) (A) log 400 nuclei 35 43 This equation is the half-life equation (one version of it), but it has already been algebraically rearranged to solve for the half-life, h. 1) Calculate the half-life of the simulated isotope using A. A. and t from your simulation. Units for half-life should be in seconds for this simulation, and the number should be reasonable (i.e., a positive value less than 100). Show your work. (4 pts)

Based on general ranking of intermolecular forces, what is the strongest intermolecular force between CO₂ molecules? a. dispersion b. dipole-dipole c. H-bonding d. dipole-induced dipole

To balance a chemical equation correctly when the reactants and products are known, you must adjust the formulas of the substances adjust the subscripts in the formulas equate the number of molecules on each side equate the number of atoms on each side

An isotope, 15x7 has an atomic number of 7 and a mass number of 15. Therefore X is an isotope of nitrogen X has 7 neutrons per atom X has 8 protons per atom X is an isotope of phosphorus

Metallic bonding occurs between atoms of Copper Sulfur Carbon Chlorine

Which substance exists as a diatomic element at room temperature? neon aluminum phosphorus chlorine

Which of the following processes is exothermic? cooking an egg boiling water to make tea heating food in a microwave an acid and base reacting together, and causing the solution to become warm

When the equation C₂H₂(g) + O₂(g) → H₂O(g) + CO₂(g) is balanced, what is the lowest whole number coefficient for oxygen?

Explain why polar solutes will dissolve in polar solvents.

When a sodium atom loses an electron it becomes radioative smaller in size negatively charge a different isotope