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Concept explainers
(a)
Interpretation:
The valence level orbital on the central atoms of
(b)
Interpretation:
The shape of
(c)
Interpretation:
The number of lone pairs on the central atoms of
(d)
Interpretation:
The type and number of bonds found in
Concept Introduction:
An electronegativity of an atom gives information about the strength that the atom has for attracting a pair of shared electrons. The greater the attraction for a pair of shared electrons when the electronegativity value is high. Consequently, when two different electronegative atoms share a pair of electrons, one atom becomes partially positive and the other atom becomes partially negative due to the attractive forces for the pair of electrons.
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Chapter 11 Solutions
FOUND.OF COLLEGE CHEMISTRY
- Identify the electron pair geometry and the molecular structure of each of the following molecules:(a) ClNO (N is the central atom)(b) CS2(c) Cl2CO (C is the central atom)(d) Cl2SO (S is the central atom)(e) SO2F2 (S is the central atom)(f) XeO2F2 (Xe is the central atom)(g) ClOF2+ (Cl is the central atom)arrow_forwardCyanogen (CN)2 is known as pseodohalogen because it has some properties like halogens. It is composed of two CN’s joined together.(i) Draw the Lewis structure for all the possible combination for (CN)2.(ii) Calculate the formal charge and determine which one of the structures that you have drawn is most stable.(iii) For the stable structure, determine the geometry around the two central atoms.(iv) For the stable structure, draw the dipole arrows for the bonds.(v) Base on the stable structure, determine the polarity of molecule and state your reason.arrow_forward3) 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_forward
- Draw the Lewis structure(s) for the molecule with the chemicalformula C2H3N, where the N is connected to only one otheratom. How many double bonds are there in the correct Lewisstructure?(a) zero (b) one (c) two (d) three (e) fourarrow_forwardAnswer 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 statement is always true according to VSEPR theory?(a) The shape of a molecule is determined only by repulsions among bonding electron groups.(b) The shape of a molecule is determined only by repulsions among nonbonding electron groups.(c) The shape of a molecule is determined by the polarity of its bonds.(d) The shape of a molecule is determined by repulsions among all electron groups on the central atom (or interior atoms, if there is more than one).arrow_forward
- Which of these molecules has the highest bond energy. (A) F2 (B) Cl2 (C) Br2 (D) I2arrow_forwardIn developing the concept of electronegativity, Pauling used the term excess bond energy for the difference between the actual bond energy of X¬Y and the average bond energies of X¬X and Y¬Y (see text discussion for the case of HF). Based on the values as shown, which of the following substances contains bonds with no excess bond energy?(a) PH3 (b) CS2 (c) BrCl (d) BH3 (e) Se8arrow_forward(c) Hydrogen sulphide is a chemical compound with the chemical formula of H2S. 1) Determine the Lewis structure for H2S. ii) Identify the type of chemical bonding in H2S and explain the reason. 111) Identify the electron geometry and molecular geometry of H2S compound by referring to the Lewis structure. (d) Magnesium is a metal from Group 2 in the periodic table. Bromine is a non-metal from Group 17 that exists as a liquid at room temperature. Magnesium can react with bromine to produce magnesium bromide. Draw cle arly possible Lewis structure for magnesium bromide and explain the type of chemical bonding in magnesium bromide.arrow_forward
- Consider the collection of nonmetallic elements O, P, Te,I, and B. (a) Which two would form the most polar singlebond? (b) Which two would form the longest single bond?(c) Which two would be likely to form a compound of formulaXY2? (d) Which combinations of elements would likelyyield a compound of empirical formula X2Y3?arrow_forwardFor each of the following molecules or molecular ions, give the steric number, sketch and name the approximate molecular geometry, and describe the direction of any distortions from the approximate geometry due to lone pairs. In each case, the central atom is listed first and the other atoms are all bonded directly to it. (a) TeH2 (c) PCI (b) AsF3 (d) XeFarrow_forwardDraw the Lewis structures and determine which of these molecules is least likely to exist. (A) H3S+ (B) H3O+ (С) НзО- (D) H3S- (E) OH- Draw all 5 structures with 1 central atom. All of the other atoms are attached to the central atom.arrow_forward
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