Homework Answers
Ans:- 20) C
21) B
22) D
23) D
24) A
In a covalent bond two atoms share two electrons, where each atom contribute one electron to form the covalent bond.The covalent bond is formed so that the atoms involved acquire the Noble gas electron configuration or the octet configuration.A nitrogen atom has electronic configuration as 1S2 2S2 2P3 ,the valence shell is 3e- defficient to attain octet configuration ( 8 electrons in the valence shell). So nitrogen atom forms three covalent bond with another nitrogen atom that is a diatomic molecule is formed.The valence electrons that do not participate in bonding are called unshared electron.The atom which require two electrons to fulfill its octet form a double bond,so oxygen molecule is joined by a double bond.The atom which require single electron to fulfill octet form a single bond.
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20. How do atoms achieve noble-gas electron configurations in single covalent bonds? a. One atom completely...
Answer true or false. 1. Atoms that lose electrons to achieve a filled valence shell become...
Answer true or false. 1. Atoms that lose electrons to achieve a filled valence shell become cations and form ionic bonds with anions. 2. Ionic bonds tend to form between elements on the left side of the Periodic Table, and covalent bonds tend to form between elements on the right side of the Periodic Table. 3. Electronegativity is a measure of an atom's attraction for the electrons it shares in a chemical bond with another atom. 4. Fluorine, in the...
1. Write the electron configurations and identify the number of valence electrons for each of the...
1. Write the electron configurations and identify the number of valence electrons for each of the following elements. oxygen sulfur nitrogen hydrogen fluorine phosphorus 2. Write name of the molecular geometry for each of the following molecules. a. A molecule with the central atom surrounded by three atoms and one lone pair. b. A molecule with a central atom surrounded by two doubly-bonded atoms. c. A molecule with a central atom surrounded by two singly-bonded atoms and two lone pairs....
How many covalent bonds are predicted for each atom? ONE covalent bond TWO covalent bonds Atoms:...
How many covalent bonds are predicted for each atom? ONE covalent bond TWO covalent bonds Atoms: B THREE covalent bonds FOUR covalent bonds Se N
9 Name IONIC and COVALENT BONDING LAB ACTIVITY, PROCEDURE and REPORT SHEET BIG IDEAS: ectron configurations...
9 Name IONIC and COVALENT BONDING LAB ACTIVITY, PROCEDURE and REPORT SHEET BIG IDEAS: ectron configurations determine how atoms combine to form chemical bonds. 2. According to the valence bond theory, the outermost electrons of atoms, the valence electrons, are the ones involved in bonding. 3. Atoms of elements can LOSE, GAIN, or SHARE electrons so that each atom involved achieves a noble gas electron configuration. This is known as the OCTET RULE 4. When atoms lose or gain electrons,...
Ionic & Covalent Virtual Lab Pre-Virtual Lab Questions: Answer these before going to the website to...
Ionic & Covalent Virtual Lab Pre-Virtual Lab Questions: Answer these before going to the website to begin the virtual lab. 1. Where are metal atoms located on the periodic table? Where are non metal atoms located on the periodic table? 2. What subatomic particles) participate in chemical bonding? 3. In your own words, define valence electrons. 4. How can you determine the number of valence electrons in an atom using the periodic table? 5. Draw a Lewis Dot Structure for...
A covalent bond is a bond in which electrons are shared between atoms of elements
A covalent bond is a
bond in which electrons are shared between atoms of elements. A
covalent bond can be polar or nonpolar. In a nonpolar covalent
bond, the bond is between two identical atoms and the electrons are
evenly shared between the atoms.In contrast, in a
polar covalent bond, the bond is between two nonidentical atoms and
the electrons are unevenly shared between the atoms. The uneven
sharing of electrons takes place because of the difference in the
electronegativity...
1. Draw these straightforward Lewis structures for these compounds and ions. CO2 HCCH H20 NO2 NH3...
1. Draw these straightforward Lewis structures for these compounds and ions. CO2 HCCH H20 NO2 NH3 NO3 NH4+ PCI: H2CO CC14 The shape of molecules is determined primarily by the number of groupings ("electron domains") around the central atom. For the structures above there, are: Two electron domains around the central atom in CO2, HCCH Three electron domains around the central atom in H2CO, NO3-, NO2 Four electron domains around the central atom in NH3, NH4+, H20, PC13, CC14 2....
In a covalent bond between two atoms, the more electronegative atom will attract more electron density...
In a covalent bond between two atoms, the more electronegative atom will attract more electron density toward itself, producing a polar bond. The more electronegative element will carry a partial negative charge, whereas the less electronegative element will carry a partial positive charge. The direction of the bond dipole is always toward the more electronegative element. This is often indicated by an arrow, as shown in the figure. The magnitude of the bond polarity can be estimated by using the...
we: In living cells, the weakest bond between wo more som a) ionic bond b) covalent...
we: In living cells, the weakest bond between wo more som a) ionic bond b) covalent bond c) polar bond d) metallic bond hydrogen bond Dor more atoms is the 41, .Tonic bonds are formed when 2) atoms share electrons D electrons are completely transferred from one stom to another c) a pair of electrons is shared unequally by two stom d) hydrogen forms bonds with negatively charged atoms in the sun e) two or more atoms lose electrons at...
part (b). In these compounds the atoms are bonded to one central atom: CIFO S (a)...
part (b). In these compounds the atoms are bonded to one central atom: CIFO S (a) Following the approach of Lecture 11, correctly calculate the number of electrons around the central atoms. 2. CLI ClOSej (Note: you will lose all points if use a different approach). ) Predict the best arrangements of the e pairs to minimize repulsions to any lone-pairs and/or multiple bonds, then sketch a clear correct structure for each compound. Show unambiguously bonds in and out of...
How many covalent bonds are predicted for each atom? ONE covalent bond TWO covalent bonds Atoms: B THREE covalent bonds FOUR covalent bonds Se N
9 Name IONIC and COVALENT BONDING LAB ACTIVITY, PROCEDURE and REPORT SHEET BIG IDEAS: ectron configurations determine how atoms combine to form chemical bonds. 2. According to the valence bond theory, the outermost electrons of atoms, the valence electrons, are the ones involved in bonding. 3. Atoms of elements can LOSE, GAIN, or SHARE electrons so that each atom involved achieves a noble gas electron configuration. This is known as the OCTET RULE 4. When atoms lose or gain electrons,...
Ionic & Covalent Virtual Lab Pre-Virtual Lab Questions: Answer these before going to the website to begin the virtual lab. 1. Where are metal atoms located on the periodic table? Where are non metal atoms located on the periodic table? 2. What subatomic particles) participate in chemical bonding? 3. In your own words, define valence electrons. 4. How can you determine the number of valence electrons in an atom using the periodic table? 5. Draw a Lewis Dot Structure for...
A covalent bond is a
bond in which electrons are shared between atoms of elements. A
covalent bond can be polar or nonpolar. In a nonpolar covalent
bond, the bond is between two identical atoms and the electrons are
evenly shared between the atoms.In contrast, in a
polar covalent bond, the bond is between two nonidentical atoms and
the electrons are unevenly shared between the atoms. The uneven
sharing of electrons takes place because of the difference in the
electronegativity...
1. Draw these straightforward Lewis structures for these compounds and ions. CO2 HCCH H20 NO2 NH3 NO3 NH4+ PCI: H2CO CC14 The shape of molecules is determined primarily by the number of groupings ("electron domains") around the central atom. For the structures above there, are: Two electron domains around the central atom in CO2, HCCH Three electron domains around the central atom in H2CO, NO3-, NO2 Four electron domains around the central atom in NH3, NH4+, H20, PC13, CC14 2....
In a covalent bond between two atoms, the more electronegative atom will attract more electron density toward itself, producing a polar bond. The more electronegative element will carry a partial negative charge, whereas the less electronegative element will carry a partial positive charge. The direction of the bond dipole is always toward the more electronegative element. This is often indicated by an arrow, as shown in the figure. The magnitude of the bond polarity can be estimated by using the...
we: In living cells, the weakest bond between wo more som a) ionic bond b) covalent bond c) polar bond d) metallic bond hydrogen bond Dor more atoms is the 41, .Tonic bonds are formed when 2) atoms share electrons D electrons are completely transferred from one stom to another c) a pair of electrons is shared unequally by two stom d) hydrogen forms bonds with negatively charged atoms in the sun e) two or more atoms lose electrons at...
part (b). In these compounds the atoms are bonded to one central atom: CIFO S (a) Following the approach of Lecture 11, correctly calculate the number of electrons around the central atoms. 2. CLI ClOSej (Note: you will lose all points if use a different approach). ) Predict the best arrangements of the e pairs to minimize repulsions to any lone-pairs and/or multiple bonds, then sketch a clear correct structure for each compound. Show unambiguously bonds in and out of...
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