select the correct answer.\nwhich is a factor in determining the average atomic mass of an element?\na…

select the correct answer.\nwhich is a factor in determining the average atomic mass of an element?\na. atomic number of the most abundant isotope\nb. relative abundance of each isotope\nc. sum of atomic masses of all isotopes\nd. product of atomic masses of all isotopes\ne. arithmetic mean of atomic masses of the isotopes

select the correct answer.\nwhich is a factor in determining the average atomic mass of an element?\na. atomic number of the most abundant isotope\nb. relative abundance of each isotope\nc. sum of atomic masses of all isotopes\nd. product of atomic masses of all isotopes\ne. arithmetic mean of atomic masses of the isotopes

Answer

Brief Explanations:

To determine the average atomic mass of an element, we use the formula: ( \text{Average Atomic Mass} = \sum (\text{atomic mass of isotope} \times \text{relative abundance of isotope}) ).

  • Option A: Atomic number is the number of protons, not related to average atomic mass calculation.
  • Option B: Relative abundance of each isotope is a key factor as it is multiplied by the atomic mass of each isotope in the calculation.
  • Option C: We don't sum the atomic masses of all isotopes; we weight them by their abundances.
  • Option D: We don't take the product of atomic masses of all isotopes.
  • Option E: The average atomic mass is a weighted average, not the arithmetic mean (which would be summing and dividing by the number of isotopes without considering abundance).

Answer:

B. relative abundance of each isotope