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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Study Guide with Selected Solutions for Stoker's General, Organic, and Biological Chemistry, 7th
- 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_forwardThe azide ion, N, is a symmetrical ion, in which all of the possible Lewis structures have formal charge on one or more atoms. Draw three possible Lewis structures for this ion. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all nonbonding electrons. Show the formal charges of all atoms. Q NNNITY ¤•• Q Submit Q NENN N=N-N² N²NN с H O N S P F Br CI X Type the new charge. Press ENTER to finish editing. Press TAB to go through atoms in the structure. Previous Answers Request Answer X Incorrect; Try Again; One attempt remaining Morearrow_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_forward
- Decide 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_forwardDeciding whether a Lewis structure satisfies the octet rule.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
- Electronegativity 1. How does electronegativity change as you move from left to right across a period? Explain your answer in terms of the number of protons in the nucleus. 2. Are there any exceptions to the trend in electronegativity as we move from left to right across a period? If so, explain what the exception is and why you think this occurs. 3. How does electronegativity change as you move from top to bottom in a group? Explain your answer in terms of energy levels. SnkPadarrow_forwardConsider the following Lewis symbols for elements. X and Y: X. and. You may want to reference (Pages 185-188) Section 6.5 while completing this problem. Q Search ▼ Part D What would be the formula of a compound of X and Y? Express your answer as a chemical formula. xa ΑΣΦ Xb b 8 x = A chemical reaction does not occur for this question. X ? Use subscripts to represent the number of each type of atom or ion in a molecule. Review how to insert subscripts and more. No credit lost. Try again. P Review | Constants 4x 3:40 AM 2/16/2023arrow_forwardWrite 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_forward
- proposed 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_forwardDo question 6 and 7 pleas if you cant do both of them just return the question pleasearrow_forwardPlace the bonds in order of increasing polar character. Place the bond with the least polar character at the top and the bond with the most polar character at the bottom.arrow_forward
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