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Concept explainers
(a)
Interpretation:
Concept Introduction:
The atomic number of an atom is equal to the number of protons in it. The atomic number is represented by Z.
![Check Mark](/static/check-mark.png)
Answer to Problem 20P
The atomic number for isotope of nitrogen A and B is 7.
Explanation of Solution
In the molecular model of fluorine, blue balls represent protons, whereas orange balls represent neutrons. Since the number of protons from given molecular model A and B is 7, the atomic number becomes 7 for A and B in both cases, as the atomic number is equal to the number of protons in that atom.
(b)
Interpretation:
The mass number for each isotope of nitrogen A and B given below should be predicted.
Concept Introduction:
The mass number is equal to the number of protons and neutrons in an atom.
![Check Mark](/static/check-mark.png)
Answer to Problem 20P
The mass number for isotope of nitrogen A and B is 14 and 13 respectively.
Explanation of Solution
From the molecular model of an isotope of nitrogen, the number of neutrons can be counted. Thus, the number of neutrons in A and B is 7 and 6 respectively.
As
For A and B, the mass number will be calculated as follows:
(c)
Interpretation:
The number of protons for each isotope of nitrogen A and B given below should be predicted.
Concept Introduction:
The number of protons is equal to the atomic number of that atom.
![Check Mark](/static/check-mark.png)
Answer to Problem 20P
The number of protons in isotope of nitrogen A and B is 7.
Explanation of Solution
As the number of protons is equal to the atomic number in an atom. The atomic number of an isotope of nitrogen of A and B is 7. Thus, the number of protons in A and B will be 7.
(d)
Interpretation:
The number of neutrons for each isotope of nitrogen A and B given below should be predicted.
Concept Introduction:
The mass number is the sum of all the protons and neutrons present in an atom. Thus, the number of neutrons can be calculated simply by subtracting the number of protons from the mass number of that atom.
![Check Mark](/static/check-mark.png)
Answer to Problem 20P
The number of neutrons in A and B is 7 and 6 respectively.
Explanation of Solution
For A the mass number and number of protons are 14 and 7 respectively. Thus, the number of neutrons in A will be calculated as follows:
For B the mass number and number of protons are 13 and 7 respectively. Thus, the number of neutrons in B will be calculated as follows:
(e)
Interpretation:
The isotope symbol for each isotope of nitrogen A and B given below should be predicted.
Concept Introduction:
Isotopes are the compounds having the same atomic number but different
To write an isotope symbol atomic number (Z) is written on the lower left side and atomic mass(A) is written on the upper left side of an element.
![Check Mark](/static/check-mark.png)
Answer to Problem 20P
The isotope symbol for A and B is
Explanation of Solution
For A, the mass number and atomic number are 14 and 7 respectively. Thus, the isotope symbol for A will be represented as follows:
For B, the mass number and atomic number are 13 and 7 respectively. Thus, the isotope symbol for B will be represented as follows:
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Chapter 10 Solutions
General, Organic, and Biological Chemistry - 4th edition
- What spectral features allow you to differentiate the product from the starting material? Use four separate paragraphs for each set of comparisons. You should have one paragraph each devoted to MS, HNMR, CNMR and IR. 2) For MS, the differing masses of molecular ions are a popular starting point. Including a unique fragmentation is important, too. 3) For HNMR, CNMR and IR state the peaks that are different and what makes them different (usually the presence or absence of certain groups). See if you can find two differences (in each set of IR, HNMR and CNMR spectra) due to the presence or absence of a functional group. Include peak locations. Alternatively, you can state a shift of a peak due to a change near a given functional group. Including peak locations for shifted peaks, as well as what these peaks are due to. Ideally, your focus should be on not just identifying the differences but explaining them in terms of functional group changes.arrow_forwardQuestion 6 What is the major product of the following Diels-Alder reaction? ? Aldy by day of A. H о B. C. D. E. OB OD Oc OE OAarrow_forwardNonearrow_forward
- In the solid state, oxalic acid occurs as a dihydrate with the formula H2C2O4 C+2H2O. Use this formula to calculate the formula weight of oxalic acid. Use the calculated formula weight and the number of moles (0.00504mol) of oxalic acid in each titrated unknown sample recorded in Table 6.4 to calculate the number of grams of pure oxalic acid dihydrate contained in each titrated unknown sample.arrow_forward1. Consider a pair of elements with 2p and 4p valence orbitals (e.g., N and Se). Draw their (2p and 4p AO's) radial probability plots, and sketch their angular profiles. Then, consider these orbitals from the two atoms forming a homonuclear л-bond. Which element would have a stronger bond, and why? (4 points)arrow_forwardWrite the reaction and show the mechanism of the reaction. Include the mechanism for formation of the NO2+ 2. Explain, using resonance structures, why the meta isomer is formed. Draw possible resonance structures for ortho, meta and para.arrow_forward
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