Chemical Bonding Questions and Answers

What is the formula for iron(II) oxide ? What is the formula for iron(III) iodide ? What is the formula for chromium(III) fluoride ?

Use the References to access important valuez if needed for this question. 3N₂H4 + 2Cr+ 6H₂O- -6NH3 + 2Cr(OH)3 In the above reaction, the oxidation state of nitrogen changes from How many electrons are transferred in the reaction? to

Substitution: (This is also called a halogenation reaction) Recall: Alkane + X2 → Halogenated alkane (or Alkyl halide) + HX 2. For each of the following reactions: i) Draw the structural diagrams for the reactants and products. ii) Name the products. Note: There may be more than one possible correct answer. a. pentane + 2 Br2 → b. butane + Cl2 → c. ethane + F2 →

This scientist published a detailed atomic theory in 1808 based on evidence he gathered through experiments with gases. His atomic theory laid the groundwork for later atomic models. Neils Bohr John Dalton Ernest Rutherford Democritus

The noble gases, such as helium and xenon, are non-reactive because: they are unusually large atoms. they have completely filled outer electron shells. they have been around longest on the earth. they are chemically unstable.

Question 7 (1 point) The force that holds neutrons and protons together in the nucleus is known as: the electronegative force. the strong nuclear force. hydrogen bonding. the weak nuclear force.

Which statement best explains why atoms form chemical bonds with other atoms? When atoms collide with other atoms, they bond automatically. Atoms are always attracted to other atoms. Most atoms are unstable unless they are combined with other atoms. Most atoms are less stable when they combine with other atoms.

This scientist led a series of experiments that used high-speed lightweight atoms called alpha particles to bombard very thin pieces of gold foil. Some of the alpha particles went straight through the foil, but a few alpha particles bounced back. The scientist used this information to hypothesize that an atom must be made of a tiny dense nucleus surrounded by a region of mostly empty space. a Ernest Rutherford b Neils Bohr c Democritus d John Dalton

Question 50 (1 point) Which of the following is TRUE? Covalent bonding occurs: a only when electrons are shared between two identical atoms. b in salts like NaCl. c when electrons are shared between two atoms. d when electrons are transferred from one atom to another.

Using the table of electronegativity provided, identify the bonds formed between following as ionic (1), polar covalent (PC) or non-polar (NP) and give the resulting electronegativity difference(6pt). O and O H and F C and O S and O. H and O F and Cl

Which of the following elements would you expect to have the greatest number of physical and chemical properties in common? Chlorine and sodium Bromine and krypton Nitrogen and phosphorus Magnesium and silicon

What is the electron pair geometry around an atom that has six electron domains? Be careful of spelling. What are the angles between the electron pairs? (Do not use the degree symbol, just the number.)

Hydrogen reacts with an element to form a compound. Which element would have the most valence electrons available to react with hydrogen? (A) Oxygen (B) chlorine (C) neon (D) nitrogen

The following resonance structures can be drawn for the azide ion, N₃‾ Identify the best resonance structure. (1) a (2) b (3) c (4) d

The standard enthalpy of formation of NO₂(g) is 33.1 kJ/mol. What is the average bond dissociation enthalpy of a nitrogen-oxygen bond in NO₂ given that the bond dissociation energies for N₂ and O₂ are 945.4 and 498.4 kJ/mol, respectively. (A) 502.1 kJ/mol (B) 1410.7 kJ/mol (C) 469.0 kJ/mol (D) 705.4 kJ/mol (E) 738.5 kJ/mol

4. Copper metal combines with solid sulfur Type of reaction: Predict the products: 5. BaCO3 Type of reaction: Predict the products: Bad + CO₂ 6. Bromine gas is bubbled through a solution of Sodium iodide. Type of reaction: Predict the products: 7. C4H10+ O2- Type of reaction: Predict the products: 8. K₂CO3 → Type of reaction: Predict the products: 9. Solid Zinc hydroxide breaks down. Type of reaction: Predict the products: 10. Cu + O2 Type of reaction: Predict the products: 11. Ca + HCI- Type of reaction: Predict the products:

Determine the oxidation state of nitrogen in the N₂ molecule.

Determine the oxidation state of sulfur in the sulfide ion, S²‾.

Draw a Lewis structure for each atom. Using Energy Diagrams for the Red/bold-faced atoms, show how all bonds (including single, double, and triple between the red atom, as well as bonds with hydrogen atoms) form. Remember that each bond MUST contain one electron from each atom. Single (sigma) bonds come hybrid orbitals, while double and triple bonds (pi bonds) come from unhybridized p-orbitals. Also make sure to show the orbitals that lone pairs are located in these must be hybridized). Make sure to get the hybridization correct!

Draw the Lewis structure for BCl3 and use your Lewis Structure to fill in answer to the following questions. Enter only a number for each, nothing else. Number of electrons shared between B and each CI: Number of lone pairs on B: Number of lone pairs on each Cl:

Determine the oxidation state of zinc in monatomic Zn.

Which of the following statements are TRUE about COCl₂ molecule? (select all that apply, wrong choices will be penalized) (Hint: Draw Lewis structure) (A) The angles between the bonding pairs are around 120° (B) The molecular geometry around the central atom is trigonal pyramidal (C) The central atom is carbon (C) (D) The molecule is nonpolar (E) The molecule contains pi (π) bond

Which of the following pure substances experience the weakest intermolecular forces of attraction? a. all of these experience IMFs of identical strength b. CH₃OH c. KCI d. CaBr₂ e. CH₄

A type of chemical bonding called bonding is caused by the electrostatic attraction of electrons in the electron sea for the nuclei of metal atoms. metallic polyatomic delocalized lattice monoatomic

_N₂ + H₂-->_NH3 How many moles of hydrogen are used to make 8.5 moles of NH3? (Hint: Do not forget to balance the equation. Selections may be rounded so choose the best answer.) 35.23 moles 5.68 moles 12.75 moles 29.94 moles

Which of the following combinations would form a solution 1) Water and ethanol II) Sand and table salt III) Oxygen and nitrogen IV) Oil and vinegar A) I B) II C) III D) II and IV E) I and III

Draw the Lewis structure for the perchlorate ion (CIO4) with minimized formal charges. How many TOTAL likely resonance structures exist for CIO4? Click to draw a new structure A) 1 B) 2 C) 3 D) 4 E) 5

Draw the Lewis structure of SF4 and then determine its electron domain and molecular geometries. Click to draw a new structure A) trigonal planar / tetrahedral B) trigonal / trigonal planar C) pyramidal / pyramidal D) trigonal bipyramidal / see-saw E) trigonal / bent (109.5°)

6 NaOH + 2 Al 2 Na3AlO3 + 3 H₂ (a) How many moles of aluminum are required to produce 4 moles of hydrogen? (b) How many moles of Na3AlO3 can be formed from 7.24 moles of NaOH? (c) How many moles of NaOH are required to produce 3.5 moles of hydrogen? (d) How many moles of hydrogen can be prepared from 6.9 moles of aluminum?

6.The intermolecular force(s) responsible for the fact that CH4 has the lowest boiling point in the set CH4, CH3CH3, CH3CH2CH3, CH3CH₂CH2CH3 is/are A) hydrogen bonding B) London dispersion forces C) mainly hydrogen bonding but also dipole-dipole interactions D) lon-dipole interactions E) mainly London-dispersion forces but also ion-dipole interactions

PCI, has electron domains and a molecular arrangement A) 6, trigonal bipyramidal B) 6, tetrahedral C) 5, square pyramidal D) 5, trigonal bipyramidal E) 6, seesaw C) 5. square pyramidal B) 6, tetrahedral E) 6. seesaw

The electron-domain geometry of is tetrahed A) CBr4 B) PH3 C) CCl₂Br2 D) XeF4 E) all of the above except XeF4

Which of the following best describes covalent bonding? A)It is a type of chemical bonding exhibited in compounds that contain positively and negatively charged ions. B)It is a type of chemical bonding exhibited in compounds that dissolve in aqueous solutions and conduct electricity. C) It is a type of chemical bonding exhibited in nonvolatile compounds. D)It is a type of chemical bonding in which electrons are shared between atoms in a molecule or a polyatomic ion. E)It is a type of chemical bonding in which the charged particles are held together by the electromagnetic forces

Covalent bonding signifies that positively and negatively charged ions are held together by electrostatic force. True False

The N-H bond in ammonia consists of A) one o bond and one π bond B) one a bond and no π bonds C) one o bond and two bonds D) two o bonds and one π bond E) two o bonds and two π bonds

As the number of covalent bonds between two atoms increases, the distance between the atoms strength of the bond between them A) increases, increases B) decreases, decreases C) increases, decreases D) decreases, increases E) is unpredictable, is unpredictable

The products when metals react with water immediately after contact are nitrites and oxygen gas salt chlorides and water metal hydroxides and hydrogen gas

12)Of the bonds C-C, C-C, and C=C, the C-C bond is A) strongest/shortest B) strongest/longest C) weakest/longest D) weakest/shortest E) intermediate in both strength and length

What is the total pressure (atm) in a 10.0 L vessel that contains 2.34 mol of carbon dioxide, 1.73 mol of sulfur dioxide, and 4.50 mol of argon at standard temperature? A) 192 B) 1.92 C) 0.192 D) 19.2 E) 0.0192

Draw the Lewis structure of Br3 and then determine its electron domain and molecular geometries. A) trigonal planar / square planar B) trigonal bipyramidal / linear C) trigonal bipyramidal / planar D) trigonal planar / trigonal E) trigonal/pentagonal

Determine the number of valence electrons in chlorite (CIO₂) and then draw the corresponding Lewis structure (with minimized formal charges). A) 24 B) 20 C) 19 D) 18 E) 21

How many fluorine atoms are present in a 8.65 g sample of molecular fluorine? You must report the answer in scientific notation displaying only 3 significant figures. Formatting convention that must be used to input a number in written in scientific notation:

How many moles of ammonia would be required to react exactly with 0.742 moles of copper(II)oxide in the following chemical reaction? 2 NH3(g) + 3 CuO(s) → 3 Cu(s) + N₂(g) + 3 H₂O(g)

From the list below, consider combining the two atoms together to form a compound. Select all that would result in an ionic complex. K+O C + CI Ca + O AI + O C+O K+CI H+O Ca + Cl C+H+F CI+ CI O+O AI+ CI

Write the formula for the polyatomic ion in Na2CO3.

Write the formula for the polyatomic ion in Ba3(PO4)2.

Write the full electron configuration for Cl-. full electron configuration: What is the atomic symbol for the noble gas that also has this electron configuration? atomic symbol:

The gold cube is dissolved in a 50/50 solution of highly concentrated HNO, and H₂SO₂. It is then reacted in a solution containing Br ions to form the compound AuBr. It turns out that the ionic salt AuBr, will undergo a reaction in the presence of blue light and ethanol to form AuBr₂. The AuBr, can be converted to AuBr, at a rate of 2.170 x 10 g/s. a. Provide the proper name for ALL of the compounds and ions listed in question 1 (besides ethanol). b. If a scientist wanted to convert 1 Kg of AuBr, how long would the process take? Give your answer in hours!

Two positively charged particles are first brought close together and then released. Once released, then repulsion between these particles causes them to move away from each other. This is an example of energy. energy being converted into a. Electrostatic potential and kinetic b. Chemical potential and electrical c. Kinetic and chemical potential d. Chemical potential and thermal

The flashlight in the photo does not 1 poin use batteries. Instead, you move a lever, which turns a geared mechanism and finally results in light from the bulb. (1) What type of energy is used to move the lever? (2) What type of energy is produced? (Select the correct combination of answers) * (1) Acoustic Energy & (2) Electrical Energy (1) Gravitational Energy & (2) Chemical Energy (1) Mechanical Energy & (2) Thermal/Light Energy (1) Mechanical Energy & (2) Electrostatic Energy