Concept explainers
(a)
Interpretation:
The formula of the possible molecules in which carbon atoms are present in the vertices of the five Platonic solids is to be predicted.
Concept introduction:
A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement. The spatial arrangement of the object remains identical after a symmetry operation. The point of reference through which a symmetry operation takes place is termed as a symmetry element.
(b)
Interpretation:
Two smallest molecules that contain various symmetry elements are to be identified.
Concept introduction:
A symmetry operation is defined as an action on an object to reproduce an arrangement that is identical to its original spatial arrangement. The spatial arrangement of the object remains identical after a symmetry operation. The point of reference through which a symmetry operation takes place is termed as a symmetry element.
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Physical Chemistry
- (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_forwardNitrogen trifluoride (NF3) is used in the electronics industry to clean surfaces. NF3 is also a potent greenhouse gas. (A) Draw the Lewis structure of NF3 and determine its molecular geometry. (B) BF3 and NF3 both have three covalently bonded fluorine atoms around a central atom. Do they have the same dipole moment? (C) Could BF3 also behave as a greenhouse gas? Explain why or why not.arrow_forward2(a) Provide the Lewis structures for both CH3OH and C2H3Cl. 2(b) What is the largest bond angle among all the bond angles in CH3OH and C2H3Cl? Listthe three atoms making this largest bond angle, and estimate the value of the angle.2(c) What intermolecular forces are present(i) between CH3OH molecules?(ii) between C2H3Cl molecules?arrow_forward
- Which substance in each of the following pairs would you expect to have the higher boiling point? (a) Ne or Xe, (b) CO2 or CS2, (c) CH4 or Cl2, (d) F2 or LiF, (e) NH3 or PH3 (a) Ne; (b) CS2; (c) CH4; (d) F2 ; (e) NH3 (a) Xe; (b) CS2; (c) Cl2; (d) LiF ; (e) PH3 O (a) Xe; (b) CS2; (c) Cl2; (d) LiF ; (e) NH3 (a) Xe; (b) CS2; (c) Cl2; (d) F2 ; (e) NH3 (a) Xe; (b) C02; (c) CH4 ; (d) LiF ; (e) PH3arrow_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_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
- Which of the following statements is correct? (A) Only neutral molecules can be non-polar, all ions are polar. (B) The net dipole moment of non-polar molecules/ions is 0. (C) All linear molecules are non-polar. (D) All molecules that contains only polar bonds are polar.arrow_forward(a) State whether or not the bonding in each substance islikely to be covalent: (i) iron, (ii) sodium chloride, (iii) water,(iv) oxygen, (v) argon. (b) A substance XY, formed from twodifferent elements, boils at -33 °C. Is XY likely to be a covalentor an ionic substance?arrow_forwardThe structure of caffeine is shown below. (a) Complete the Lewis structure. (b) How many pi bonds are present in caffeine? How many sigma bonds? (c) Identify the hybridization of the carbon atoms. (d) What is the value of the O-C-N angle?arrow_forward
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- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning