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7 September, 19:45

3. Write the nuclear symbol and hyphen notation

for each of the following isotopes:

a. mass number of 28 and atomic number of 14

b. 26 protons and 30 neutrons

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Answers (2)
  1. 7 September, 19:48
    0
    A. Si-28

    B. Fe-56
  2. 7 September, 20:14
    0
    a. ²⁸₁₄Si, Silicon-28

    b. ⁵⁶₂₆Fe, Iron-56

    Explanation:

    a. For the nuclear symbol, the mass number of the isotope is on top while the atomic number is at the bottom. For example, ²⁸₁₄Si. The hypen notation for the isotope is Silicon-28 based on the atomic number and mass number.

    b. The mass number of the isotope is equal to the sum of protons and neutrons = 26+30 = 56. The atomic number is the number of protons = 26. Thus, the nuclear symbol is ⁵⁶₂₆Fe and the hypen notation is Iron-56.
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