
Concept explainers
State the number of valence electrons, bonding pairs, and lone pairs in each of the following Lewis structures: (10.1)
(a)

Interpretation:
Interpret number of valence electron, bond pair and lone pair in the given Lewis structure.
Concept Introduction:
Valence electrons are the electrons present in the outermost orbital or shell of an atom which participates in the formation of bond with another atom.
The bond formed between two atoms by sharing of electrons is known as covalent bond. A single chemical bond is formed by sharing of 2 electrons while double bond is formed by sharing of 4 and triple bond is formed by sharing of 6 electrons.
Total number of valence electron can be determined by adding all the electrons present in the outermost shell of each atom present in a molecule.
For example, inHxOy
Total number of valence electron = number of H (valence electron of H) + number of O (valence electron of O)
Answer to Problem 59UTC
Total number of valence electron = 2
Bond pair = 1
Lone pair = 0
Explanation of Solution
The given Lewis structure is as follows:
Total number of valence electron = number of H (valence electron of H)
Total number of valence electron = 2
Bond pair = 1
Lone pair = 0
(b)

Interpretation:
Interpret number of valence electron, bond pair and lone pair in given Lewis structure.
Concept Introduction:
Valence electrons are the electrons present in the outermost orbital or shell of an atom which participates in the formation of bond with another atom.
The bond formed between two atoms by sharing of electrons is known as covalent bond. A single chemical bond is formed by sharing of 2 electrons while double bond is formed by sharing of 4 and triple bond is formed by sharing of 6 electrons.
Total number of valence electron can be determined by adding all the electrons present in the outermost shell of each atom present in a molecule.
For example, inHxOy
Total number of valence electron = number of H (valence electron of H) + number of O (valence electron of O)
Answer to Problem 59UTC
Total number of valence electron = 8
Bond pair = 1
Lone pair = 3
Explanation of Solution
The given Lewis structure is of HBr.
Total number of valence electron = number of H (valence electron of H) + number of Br (valence electron of Br)
Total number of valence electron = 1 (1) + 1 (7) = 8
Bond pair = 1
Lone pair = 3
(c)

Interpretation:
Interpret number of valence electron, bond pair and lone pair in Br-Br
Concept Introduction:
Valence electrons are the electrons present in the outermost orbital or shell of an atom which participates in the formation of bond with another atom.
The bond formed between two atoms by sharing of electrons is known as covalent bond. A single chemical bond is formed by sharing of 2 electrons while double bond is formed by sharing of 4 and triple bond is formed by sharing of 6 electrons.
Total number of valence electron can be determined by adding all the electrons present in the outermost shell of each atom present in a molecule.
For example, inHxOy
Total number of valence electron = number of H (valence electron of H) + number of O (valence electron of O)
Answer to Problem 59UTC
Total number of valence electron = 2 (7) = 14
Bond pair = 1
Lone pair = 6
Explanation of Solution
The given Lewis structure is of Br2.
Total number of valence electron = number of Br (valence electron of Br)
Total number of valence electron = 2 (7) = 14
Bond pair = 1
Lone pair = 6
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- 5.arrow_forward6.arrow_forward0/5 alekscgi/x/sl.exe/1o_u-IgNglkr7j8P3jH-IQs_pBaHhvlTCeeBZbufuBYTi0Hz7m7D3ZcSLEFovsXaorzoFtUs | AbtAURtkqzol 1HRAS286, O States of Matter Sketching a described thermodynamic change on a phase diagram The pressure on a sample of pure X held at 47. °C and 0.88 atm is increased until the sample condenses. The pressure is then held constant and the temperature is decreased by 82. °C. On the phase diagram below draw a path that shows this set of changes. 3 pressure (atm) + 0- 0 5+ 200 temperature (K) 400 Explanation Check X 0+ F3 F4 F5 F6 F7 S 2025 McGraw Hill LLC All Rights Reserved. Terms of Use Privacy Center Accessibility Q Search LUCR + F8 F9 F10 F11 F12 * % & ( 5 6 7 8 9 Y'S Dele Insert PrtSc + Backsarrow_forward
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- 0+ aleksog/x/lsl.exe/1ou-lgNgkr7j8P3H-IQs pBaHhviTCeeBZbufuBYTOHz7m7D3ZStEPTBSB3u9bsp3Da pl19qomOXLhvWbH9wmXW5zm O States of Matter Sketching a described thermodynamic change on a phase diagram 0/5 Gab The temperature on a sample of pure X held at 0.75 atm and -229. °C is increased until the sample sublimes. The temperature is then held constant and the pressure is decreased by 0.50 atm. On the phase diagram below draw a path that shows this set of changes. F3 pressure (atm) 0- 0 200 Explanation temperature (K) Check F4 F5 ☀+ Q Search Chill Will an 9 ENG F6 F7 F8 F9 8 Delete F10 F11 F12 Insert PrtSc 114 d Ararrow_forwardx + LEKS: Using a phase diagram a X n/alekscgi/x/lsl.exe/10_u-IgNsikr7j8P3jH-IQs_pBan HhvlTCeeBZbufu BYTI0Hz7m7D3ZcHYUt80XL-5alyVpw ○ States of Matter Using a phase diagram to find a phase transition temperature or pressure Use the phase diagram of Substance X below to find the melting point of X when the pressure above the solid is 1.1 atm. pressure (atm) 16 08- solid liquid- 0 200 400 gas 600 temperature (K) Note: your answer must be within 25 °C of the exact answer to be graded correct. × 5arrow_forwardS: Using a phase diagram leksogi/x/sl.exe/1ou-IgNs kr 7j8P3jH-IQs_pBan HhvTCeeBZbufuBYTI0Hz7m7D3ZdHYU+80XL-5alyVp O States of Matter Using a phase diagram to find a phase transition temperature or pressure se the phase diagram of Substance X below to find the boiling point of X when the pressure on the liquid is 1.6 atm. pressure (atm) 32- 16- solid liquid 0. gas 100 200 temperature (K) 300 Note: your answer must be within 12.5 °C of the exact answer to be graded correct. 10 Explanation Check § Q Search J 2025 McGraw Hill LLC. All Rights Researrow_forward
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- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning
