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Chapter 2: Problem 58

Write the atomic symbol \(\left(\frac{1}{z} X\right)\) for each of the isotopes described below. a. number of protons \(=27\), number of neutrons \(=31\) b. the isotope of boron with mass number 10 c. \(Z=12, A=23\) d. atomic number 53 , number of neutrons \(=79\) e. \(Z=20\), number of neutrons \(=27\) f. number of protons \(=29\), mass number 65

Short Answer

Expert verified
a. \(\left(\frac{58}{27} \text{Co}\right)\) b. \(\left(\frac{10}{5} \text{B}\right)\) c. \(\left(\frac{23}{12} \text{Mg}\right)\) d. \(\left(\frac{132}{53} \text{I}\right)\) e. \(\left(\frac{47}{20} \text{Ca}\right)\) f. \(\left(\frac{65}{29} \text{Cu}\right)\)

Step by step solution

01

Calculate Atomic Number (Z) and Mass Number (A)

In this case, the atomic number (Z) is given as 27. We need to find the mass number (A). To do this, we sum the number of protons (27) and the number of neutrons (31): A = 27 + 31 A = 58
02

Write Atomic Symbol

Now we can write the atomic symbol: \(\left(\frac{58}{27} \text{Co}\right)\) #b. Isotope of boron with mass number 10#
03

Calculate Atomic Number (Z) and Mass Number (A)

The atomic number (Z) of boron is 5. The mass number (A) is given as 10.
04

Write Atomic Symbol

Now we can write the atomic symbol: \(\left(\frac{10}{5} \text{B}\right)\) #c. Z = 12, A = 23#
05

Verify Atomic Number (Z) and Mass Number (A)

In this case, we are given the atomic number (Z) and mass number (A) directly.
06

Write Atomic Symbol

Now we can write the atomic symbol: \(\left(\frac{23}{12} \text{Mg}\right)\) #d. Atomic number 53, number of neutrons = 79#
07

Calculate Atomic Number (Z) and Mass Number (A)

The atomic number (Z) is given as 53. To find the mass number (A), we sum the number of protons (53) and the number of neutrons (79): A = 53 + 79 A = 132
08

Write Atomic Symbol

Now we can write the atomic symbol: \(\left(\frac{132}{53} \text{I}\right)\) #e. Z = 20, number of neutrons = 27#
09

Calculate Atomic Number (Z) and Mass Number (A)

The atomic number (Z) is given as 20. To find the mass number (A), we sum the number of protons (20) and the number of neutrons (27): A = 20 + 27 A = 47
10

Write Atomic Symbol

Now we can write the atomic symbol: \(\left(\frac{47}{20} \text{Ca}\right)\) #f. Number of protons = 29, mass number 65#
11

Calculate Atomic Number (Z) and Mass Number (A)

In this case, the atomic number (Z) is given as 29. The mass number (A) is given as 65.
12

Write Atomic Symbol

Now we can write the atomic symbol: \(\left(\frac{65}{29} \text{Cu}\right)\)

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Most popular questions from this chapter

From the information in this chapter on the mass of the proton, the mass of the electron, and the sizes of the nucleus and the atom, calculate the densities of a hydrogen nucleus and a hydrogen atom.

If the volume of a proton were similar to the volume of an electron, how will the densities of these two particles compare to each other?

For each of the following ions, indicate the number of protons and electrons the ion contains. a. \(\mathrm{Ba}^{2+}\) b. \(\mathrm{Zn}^{2+}\) c. \(\mathrm{N}^{3-}\) d. \(\mathrm{Rb}^{+}\) e. \(\mathrm{Co}^{3+}\) f. \(\mathrm{Te}^{2-}\) g. \(\mathrm{Br}^{-}\)

a. List the noble gas elements. Which of the noble gases has only radioactive isotopes? (This situation is indicated on most periodic tables by parentheses around the mass of the element. See inside front cover.) b. Which lanthanide element has only radioactive isotopes?

The designations IA through 8 A used for certain families of the periodic table are helpful for predicting the charges on ions in binary ionic compounds. In these compounds, the metals generally take on a positive charge equal to the family number, while the nonmetals take on a negative charge equal to the family number minus eight. Thus the compound between sodium and chlorine contains \(\mathrm{Na}^{+}\) ions and \(\mathrm{Cl}^{-}\) ions and has_the formula \(\mathrm{NaCl}\). Predict the formula and the name of the binary compound formed from the following pairs of elements. a. \(\mathrm{Ca}\) and \(\mathrm{N}\) b. \(\mathrm{K}\) and \(\mathrm{O}\) c. \(\mathrm{Rb}\) and \(\mathrm{F}\) d. \(\mathrm{Mg}\) and \(\mathrm{S}\) e. \(\mathrm{Ba}\) and \(\mathrm{I}\) f. Al and Se g. \(\mathrm{Cs}\) and \(\mathrm{P}\) h. In and \(\mathrm{Br}\)
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