Concept explainers
a)
Interpretation:
Lewis structure must be drawn for methane.
Concept Introduction:
Methane is a molecule with formula CH4.
C is the central atom which is a p block element belonging to group 14.
Lewis structure can be determined from the valence electrons of a central atom.
Total electron pairs will be:
Where V, n, a and c are valence shell electrons of central
b)
Interpretation:
Lewis structure needs to be drawn for carbon dioxide.
Concept Introduction:
Lewis structure can be determined from the valence electrons of a central atom.
Total electron pairs will be:
Where V, n, a and c are valence shell electrons of central atom, number of monovalent atoms attached, anionic charge, cationic charge respectively.
c)
Interpretation:
Lewis structure needs to be drawn for Phosphorous trichloride.
Concept Introduction:
Lewis structure can be determined from the valence electrons of a central atom.
Total electron pairs will be:
Where V, n, a and c are valence shell electrons of central atom, number of monovalent atoms attached, anionic charge, cationic charge respectively.
d)
Interpretation:
Lewis structure needs to be drawn for perchlorate ion.
Concept Introduction:
Lewis structure can be determined from the valence electrons of a central atom.
Total electron pairs will be:
Where V, n, a and c are valence shell electrons of central atom, number of monovalent atoms attached, anionic charge, cationic charge respectively.
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Bundle: Principles of Modern Chemistry, 8th + OWLv2, 1 term (6 months) Printed Access Card
- Draw Lewis structures for the following compounds.(a) ammonia, NH3 (b) water, H2O(c) hydronium ion, H3O+ (d) propane, C3H8(e) dimethylamine, CH3NHCH3 (f) diethyl ether, CH3CH2OCH2CH3(g) 1-chloropropane, CH3CH2CH2Cl (h) propane-2-ol, CH3CH(OH)CH3(i) borane, BH3 (j) boron trifluoride, BF3Explain what is unusual about the bonding in the compounds in parts (i) and (j)arrow_forwardDraw a Lewis electron-dot symbol for (a) Ba; (b) Kr; (c) Br.arrow_forwardDraw Lewis diagrams for the following ions. In the formula the symbol of the central atom is given first. (Hint:The valence octet may be expanded for the central atom.)(a) BrO4 - (b) PCl6 - (c) XeF6+arrow_forward
- There is persuasive evidence for the brief existence of the unstable molecule OPCl. (a) Draw a Lewis diagram for this molecule in which the octet rule is satisfied on all atoms and the formal charges on all atoms are zero. (b) The compound OPCl reacts with oxygen to give O2PCl. Draw a Lewis diagram of O2PCl for which all formal charges are equal to zero. Draw a Lewis diagram in which the octet rule is satisfied on all atoms.arrow_forwardDraw a Lewis electron-dot symbol for (a) Rb; (b) Si; (c) I.arrow_forwardIn addition to ammonia, nitrogen forms three other hy-drides: hydrazine (N₂H₄), diazene (N₂H₂), and tetrazene (N₄H₄).(a) Use Lewis structures to compare the strength, length, and or-der of nitrogen-nitrogen bonds in hydrazine, diazene, and N₂.(b) Tetrazene (atom sequence H₂NNNNH₂) decomposes above 0°C to hydrazine and nitrogen gas. Draw a Lewis structure fortetrazene, and calculate ΔH°ᵣₓₙ for this decomposition.arrow_forward
- Which of the following bonds are polar: (a) P—O; (b) S—F; (c) Br—Br; (d) O—Cl? Which is the more electronegative atom in each polar bond?arrow_forwardDraw a Lewis electron-dot symbol for (a) Sr; (b) P; (c) S.arrow_forwardA resident expert on electronegativity comes up to visit with you. He makes two claims (seen below) about electronegativity with relation to covalent bonding. Is the expert correct or can you refute him with your knowledge of electronegativity? (a) If a diatomic molecule is made up of atoms X and Y, which have different electronegativities, the molecule must be polar. (b) The farther two atoms are apart in a bond, the larger the dipole moment will be.arrow_forward
- Draw Lewis electron dot diagrams for the following species: (a) AsH3; (b Draw Lewis electron dot diagrams for the following species: (a) AsH3; (b) HOCl; (c) KrF+; (d) PO2 Cl 2 - (centralP atom).arrow_forwardWrite the Lewis symbol for atoms of each of the following elements:(a) Al, (b) Br, (c) Ar, (d) Sr.arrow_forwardQUESTION 5 (31 MARKS) (a) (i) Draw a pz orbital and a d?-y² orbital. (4) (ii) What are the differences between a 5pz orbital and a 4d,- orbital in the H atom? (6) (b) (i) Draw the Lewis structure of methanol, CH3OH(8). (3) (ii) Show with a simple diagram how methanol dissolves in water. Explain. (2) (c) How does the energy and length of the carbon-oxygen bond in CH3OH(e) compare with the carbon-oxygen distance in carbon monoxide? Explain. (5) (d) Chemical bonds can be classified as polar covalent, according to and (3) (e) Chemical bonds can also be classified as single or number of according to the (2) (f) Draw the Lewis structure(s) for SO3F. Explain the structure which you have drawn. (6)arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning