QUESTION IMAGE
Question
- directions: fill in the following table with the correct names, symbols, and numbers. first one is done for you as an example. carbon - 12 carbon - 13 titanium - ____
Carbon - 13
Isotope Symbol
The general form of an isotope symbol is \(_{Z}^{A}X\), where \(Z\) is the atomic number and \(A\) is the mass number. For carbon, the atomic number \(Z = 6\). Since it is carbon - 13, the mass number \(A=13\). So the isotope symbol is \(_{6}^{13}C\).
Protons
The number of protons is equal to the atomic number. For carbon, the atomic number \(Z = 6\), so the number of protons is \(6\).
Neutrons
The formula for the number of neutrons \(N=A - Z\). Here \(A = 13\) and \(Z = 6\), so \(N=13 - 6=7\).
Atomic Number
The atomic number of carbon is \(6\).
Mass Number
Since it is carbon - 13, the mass number is \(13\).
\(_{35}^{79}Br\)
Isotope Name
The isotope name is formed as "Element - Mass Number". The element is bromine (\(Br\)) and the mass number \(A = 79\), so the isotope name is Bromine - 79.
Protons
The atomic number \(Z\) is given as \(35\) (from the subscript in the isotope symbol \(_{35}^{79}Br\)), so the number of protons is \(35\).
Neutrons
Using \(N=A - Z\), with \(A = 79\) and \(Z = 35\), we get \(N=79 - 35 = 44\).
Atomic Number
The atomic number \(Z = 35\).
Mass Number
The mass number \(A = 79\) (from the superscript in the isotope symbol \(_{35}^{79}Br\)).
\(_{30}^{65}Zn\)
Isotope Name
The element is zinc (\(Zn\)) and the mass number \(A = 65\), so the isotope name is Zinc - 65.
Protons
The atomic number \(Z = 30\) (from the subscript in the isotope symbol \(_{30}^{65}Zn\)), so the number of protons is \(30\).
Neutrons
Using \(N=A - Z\), with \(A = 65\) and \(Z = 30\), we get \(N=65 - 30=35\).
Atomic Number
The atomic number \(Z = 30\).
Mass Number
The mass number \(A = 65\) (from the superscript in the isotope symbol \(_{30}^{65}Zn\)).
\(2\) protons and \(2\) neutrons
Isotope Name
The element with \(Z = 2\) is helium (\(He\)). Using \(A=Z + N\), with \(Z = 2\) and \(N = 2\), \(A = 4\). So the isotope name is Helium - 4.
Isotope Symbol
The isotope symbol is \(_{2}^{4}He\).
Atomic Number
The atomic number \(Z = 2\).
Mass Number
Using \(A=Z + N\), \(A=2 + 2=4\).
\(19\) protons and \(21\) neutrons
Isotope Name
The element with \(Z = 19\) is potassium (\(K\)). Using \(A=Z + N\), \(A=19+21 = 40\). So the isotope name is Potassium - 40.
Isotope Symbol
The isotope symbol is \(_{19}^{40}K\).
Atomic Number
The atomic number \(Z = 19\).
Mass Number
Using \(A=Z + N\), \(A=19 + 21=40\).
Atomic Number \(82\) and Mass Number \(206\)
Isotope Name
The element with \(Z = 82\) is lead (\(Pb\)). So the isotope name is Lead - 206.
Isotope Symbol
The isotope symbol is \(_{82}^{206}Pb\).
Protons
The number of protons is equal to the atomic number, so it is \(82\).
Neutrons
Using \(N=A - Z\), with \(A = 206\) and \(Z = 82\), \(N=206 - 82=124\).
Atomic Number \(51\) and Mass Number \(122\)
Isotope Name
The element with \(Z = 51\) is antimony (\(Sb\)). So the isotope name is Antimony - 122.
Isotope Symbol
The isotope symbol is \(_{51}^{122}Sb\).
Protons
The number of protons is equal to the atomic number, so it is \(51\).
Neutrons
Using \(N=A - Z\), with \(A = 122\) and \(Z = 51\), \(N=122 - 51 = 71\).
\(29\) neutrons and Atomic Number \(26\)
Isotope Name
The element with \(Z = 26\) is iron (\(Fe\)). Using \(A=Z + N\), with \(Z = 26\) and \(N = 29\), \(A=26+29 = 55\). So the isotope name is Iron - 55.
Isotope Symbol
The isotope symbol is \(_{26}^{55}Fe\).
Protons
The number of protons is equal to the atomic number, so it is \(26\).
Mass Number
Using \(A=Z…
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| Isotope Name | Isotope Symbol | # of Proton | # of Neutrons | Atomic Number | Mass Number |
|---|---|---|---|---|---|
| Carbon - 13 | \(_{6}^{13}C\) | \(6\) | \(7\) | \(6\) | \(13\) |
| Bromine - 79 | \(_{35}^{79}Br\) | \(35\) | \(44\) | \(35\) | \(79\) |
| Zinc - 65 | \(_{30}^{65}Zn\) | \(30\) | \(35\) | \(30\) | \(65\) |
| Helium - 4 | \(_{2}^{4}He\) | \(2\) | \(2\) | \(2\) | \(4\) |
| Potassium - 40 | \(_{19}^{40}K\) | \(19\) | \(21\) | \(19\) | \(40\) |
| Lead - 206 | \(_{82}^{206}Pb\) | \(82\) | \(124\) | \(82\) | \(206\) |
| Antimony - 122 | \(_{51}^{122}Sb\) | \(51\) | \(71\) | \(51\) | \(122\) |
| Iron - 55 | \(_{26}^{55}Fe\) | \(26\) | \(29\) | \(26\) | \(55\) |
| Tin - 120 | \(_{50}^{120}Sn\) | \(50\) | \(70\) | \(50\) | \(120\) |
| Titanium - 48 | \(_{22}^{48}Ti\) | \(22\) | \(24\) | \(22\) | \(48\) |