Problem 24
Draw a diagram of the arrangement of protons, neutrons, and electrons in an atom of each of the following isotopes: (a) \(^{31} \mathrm{P}\) (b) \(^{35} \mathrm{Cl}\) (c) \({ }^{40} \mathrm{Ar}\) (d) 131 I
Problem 25
Distinguish between atomic number and mass number.
Problem 26
Distinguish between atomic mass and isotopic mass.
Problem 28
What is the current atomic mass scale reference isotope?
Problem 29
Given that the only naturally occurring isotope of sodium is \({ }^{23} \mathrm{Na},\) determine its mass from the periodic table.
Problem 30
Given that the only naturally occurring isotope of aluminum is \({ }^{27} \mathrm{Al}\), determine its mass from the periodic table.
Problem 31
Given that the only naturally occurring isotope of fluorine is \({ }^{19} \mathrm{~F}\), determine its mass from the periodic table.
Problem 32
Given that the only naturally occurring isotope of phosphorus is \({ }^{31} \mathrm{P},\) determine its mass from the periodic table.
Problem 33
Calculate the atomic mass for lithium given the following data for its natural isotopes: $$ \begin{array}{ccc} { }^{6} \mathrm{Li} & 6.015 \mathrm{amu} & 7.42 \% \\ { }^{7} \mathrm{Li} & 7.016 \mathrm{amu} & 92.58 \% \end{array} $$
Problem 34
Calculate the atomic mass for magnesium given the following data for its natural isotopes: $$ \begin{array}{lll} { }^{24} \mathrm{Mg} & 23.985 \mathrm{amu} & 78.70 \% \\ { }^{25} \mathrm{Mg} & 24.986 \mathrm{amu} & 10.13 \% \\ { }^{26} \mathrm{Mg} & 25.983 \mathrm{amu} & 11.17 \% \end{array} $$
