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
Want to see more full solutions like this?
Chapter 10 Solutions
Basic Chemistry
- Question 7.102arrow_forward6.149 Indicate the major type of intermolecular forces-(1) ionic bonds, (2) dipole-dipole attractions, (3) hydrogen bonds, (4) dispersion forces-that occurs between particles of the following: (6.9) a. NF3 d. Cs,0 с. Brz f. CH;OH b. CIF e. C4H10arrow_forward(6.5)What is the molar volume of argon gas at STP? O 15.3 L O 22.4 L O 4.00 L O 1.00 Larrow_forward
- Barium Hydroxide has a solubility of 4.68 g Ba(OH)2 in 100. g H2O at 25°C. Determine if each of the following solutions will be saturated or unsaturated at 25°C: (9.3) a) adding 32 g of Ba(OH)2 to 990 g of H2O b) adding 7.0 g of Ba(OH)2 to 125 g of H2O c) adding 22 g of Ba(OH)2 to 350. g of H2Oarrow_forwardQuestion 32arrow_forward3.106 A metal is thought to be copper or gold. When 18 g of the metal absorbs 58 cal, its temperature rises by 35 °C. (3.6)arrow_forward
- The number of moles of H2O produced in reaction of 50 mL 1.0 M HCl and 50 mL 1.0 M NaOH: (5.00×10−2) Joules released per mole of water formed: ?arrow_forwardWhat is the enthalpy change when 0.1 moles of ethanol undergoes complete combustion? The molar enthalpy for the combustion of ethanol is -1211 kJ/mol. Is the reaction exothermic or endothermic? (1:3)arrow_forward(6.5:Similar to For More Practice 6.7) Density of a gas is 0.8916 g/L at 1.0 atm and 273 °C. Identify the gas. (Hint: Find the molar mass of the gas.) O oxygen (O₂) O chlorine gas (Cl₂) O argon (Ar) O none of thesearrow_forward
- If the enthalpy of C12H22O11 combustion is said to be -5.65 x 103 kJ/mol, calculate the mass of C12H22O11 needed to be burned to produce 2.6 kJ of heat. (MM of sucrose: 342.3)arrow_forward(Q28) How many grams of phosphine (PH3) gas can form when an excess of solid phosphorus (P4) reacts in a sealed chamber with 56.2 liters of hydrogen (H2) gas at STP? (3 sf)arrow_forward1. (9 points) A 15.0 gram piece of metal is heated to 65.0°C and then dropped into 175 grams of 24.0°C water. The system eventually comes to a stable temperature of 35.5 C. (The specific heat of water is 4.184 J/g °C) a. Energy is absorbed by the water. What is qWATER? b. Energy is released by the metal. What is qMETAL? (this one is easy) c. What is the specific heat (Cs) of the metal?arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage Learning