Concept explainers
(a)
Interpretation:
Whether element 2 has higher electronegative value than that of element 4 should be indicated.
Concept Introduction:
Close relationship between ionic and covalent bonding models becomes apparent if the bond polarity and electronegativity is considered. Electronegativity is the measure of relative attractive for the shared pair of electrons in a bond. Higher the electronegative value for an atom, the more it attracts the shared pair of electrons towards itself.
In Periodic table, when moving from left to right in a period, the electronegativity value increases. While moving from top to bottom within group, the electronegativity value decreases. Nonmetals have higher electronegativity values than metals. Metals gives electrons and nonmetals accepts electrons.
(b)
Interpretation:
Whether element 5 has higher electronegative value than that of element 6 should be indicated.
Concept Introduction:
Close relationship between ionic and covalent bonding models becomes apparent if the bond polarity and electronegativity is considered. Electronegativity is the measure of relative attractive for the shared pair of electrons in a bond. Higher the electronegative value for an atom, the more it attracts the shared pair of electrons towards itself.
In Periodic table, when moving from left to right in a period, the electronegativity value increases. While moving from top to bottom within group, the electronegativity value decreases. Nonmetals have higher electronegativity values than metals. Metals gives electrons and nonmetals accepts electrons.
(c)
Interpretation:
Whether element 7 has higher electronegative value than that of element 8 should be indicated.
Concept Introduction:
Close relationship between ionic and covalent bonding models becomes apparent if the bond polarity and electronegativity is considered. Electronegativity is the measure of relative attractive for the shared pair of electrons in a bond. Higher the electronegative value for an atom, the more it attracts the shared pair of electrons towards itself.
In Periodic table, when moving from left to right in a period, the electronegativity value increases. While moving from top to bottom within group, the electronegativity value decreases. Nonmetals have higher electronegativity values than metals. Metals gives electrons and nonmetals accepts electrons.
(d)
Interpretation:
Whether element 3 has higher electronegative value than that of element 1 should be indicated.
Concept Introduction:
Close relationship between ionic and covalent bonding models becomes apparent if the bond polarity and electronegativity is considered. Electronegativity is the measure of relative attractive for the shared pair of electrons in a bond. Higher the electronegative value for an atom, the more it attracts the shared pair of electrons towards itself.
In Periodic table, when moving from left to right in a period, the electronegativity value increases. While moving from top to bottom within group, the electronegativity value decreases. Nonmetals have higher electronegativity values than metals. Metals gives electrons and nonmetals accepts electrons.
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General, Organic, and Biological Chemistry
- Which statements are true about electronegativity? (a) Electronegativity increases from left to right in a period of the Periodic Table. (b) Electronegativity increases from top to bottom in a column of the Periodic Table. (c) Hydrogen, the element with the lowest atomic number, has the smallest electronegativity. (d) The higher the atomic number of an element, the greater its electronegativity.arrow_forwardThere are four exceptions to the octet rule. State them below: A hydrogen atom will never carry an octet. Instead, a hydrogen atom carries a _____ which means it is in possession of _____ electrons. Boron (B) and Beryllium (Be) can exist with _______ (fewer or more) than an octet of electrons. Non-metals from period 3 and above can exist with _______ (fewer or more) than an octet of electrons. Free radicals are molecules that can have ______________ electrons.arrow_forwardRemaining Time: 31 minutes, 00 seconds. ¥ Question Completion Status: A Moving to another question will save this response. Question 6 Arrange the following in order of decreasing electronegativity (eg A>B>C}: Mo, Ge, Ba, S, Si, Sr A Moving to another question will save this response. F10 Prisc F2 F3 てい。 Esc F4 F5 Scr Lk & 23 2$ 2 9. R. E gel A Caps Lockarrow_forward
- An incomplete Lewis structure is shown below. The structure only shows the atoms and how they are connected. The molecule has a net charge of zero. H Н—N—С- -о—с—Н H H Complete the Lewis structure giving all atoms full octets. If there is more than one way to do this, draw resonance structures showing all possibilities. If not, just draw one Lewis structure. Be sure to write in any non-zero formal charges. Click and drag to start drawing a structure.arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are: 0 Yes. No, it has the wrong number of valence electrons. a=ö:] The correct number is: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are: 0 Yes. No, it has the wrong number of valence electrons. :0: The correct number is: 0 HIC-H No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:" * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". X 5 ? : Z: I :Z:arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. H No, it has the wrong number of valence electrons. The correct number is: Н — N— Н No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: Н — С — С — Н No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: :N-N= N | No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". :0 : :0 :arrow_forward
- Write the Lewis structure(s) of the following ion and the compound to complete the table below. Ion/ compound Total number of valence electrons Lewis Structure NO2- KNO2 leave emptyarrow_forwardproposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. Н — о — Н The correct number is: O No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: O Н — Н — О No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. :0-c- The correct number is: O — С — о: No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". :0: :0 :arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. fä=öj] The correct number is:|| Cl=0: olo No, it has the right number of valence electrons but doesn't satisfy the octet rule. Ar The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is:I C=N No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: N= N No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* * If two or more atoms of the same element don't satisfy the octet rule, just enter the chemical symbol as many times as necessary. For example, if two oxygen atoms don't satisfy the octet rule, enter "O,0". Explanation Check ©…arrow_forward
- Question 5 Consider the following incomplete structures. On your rough sheet, complete their Lewis structures (including minimizing formal charge) by adding electrons/bonds where necessary. Which statement below is true of the completed Lewis structures? Hint: Consider the potential for multiple bonds on the molecules and be sure to account for all valence electrons. The second Lewis structure has both nonzero formal charges and resonance structures, while the first Lewis structure has resonance structures but no nonzero formal charges. The first Lewis structure has non-zero formal charges but does not have resonance structures, while the second exhibits both resonance structures and nonzero formal charges O None of these O The formal charges on all the atoms are zero, and the molecules have no resonance structures. The second Lewis structure has nonzero formal charges but no resonance structures, while the first has resonance structures but no nonzero formal charges. The first Lewis…arrow_forwardDecide whether these proposed Lewis structures are reasonable. proposed Lewis structure Is the proposed Lewis structure reasonable? Yes. No, it has the wrong number of valence electrons. Н— Br The correct number is: U No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. .. The correct number is: O Н — С — С — Н No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* Yes. No, it has the wrong number of valence electrons. The correct number is: || Н — Н- No, it has the right number of valence electrons but doesn't satisfy the octet rule. The symbols of the problem atoms are:* :0 : :arrow_forwardFor each of the following reactions, the elements combine through transfer of one or more electrons, resulting in a completely filled outermost shell form each atom. Draw Lewis structures for each atom, assigning the correct number of valence electrons and the correct charges. Na + Cl -> NaCl Zn + O -> ZnO Mg + 2I -> IMgIarrow_forward
- General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage LearningOrganic ChemistryChemistryISBN:9781305580350Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. FootePublisher:Cengage Learning