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1 Write the correct symbol, with both superscript and subscript,
1 Write the correct symbol, with both superscript and subscript,for each of the following. Use the list of elements in the front
inside cover as needed: (a) the isotope of platinum that contains
118 neutrons, (b) the isotope of krypton with mass number 84,
(c) the isotope of arsenic with mass number 75, (d) the isotope of
magnesium that has an equal number of protons and neutrons.
Final answer:The correct symbols for the isotopes requested are: Pt-196 for the platinum isotope with 118 neutrons, Kr-84 for the krypton isotope with a mass number of 84, As-75 for the arsenic isotope with a mass number of 75, and Mg-24 for the magnesium isotope with equal neutrons and protons.Explanation:The question is asking for the symbols of several isotopes. Anisotopeis an element with the same number of protons but a different number of neutrons compared to the most common standard atom of that element. The symbol for isotopes is commonly written as follows: X-A, where X is the atomic symbol, and A is the mass number (the number of protons plus neutrons).(a) Theplatinumisotope that contains 118 neutrons. Platinum (Pt) has an atomic number of 78, so adding 78 protons and 118 neutrons we get:Pt-196.(b) The isotope of krypton (Kr) with a mass number of 84 is written asKr-84.(c) The isotope of arsenic (As) with a mass number of 75 is written asAs-75.(d) The isotope of magnesium (Mg) that has an equal number of protons and neutrons. Magnesium has 12 protons, so if it has an equal number of neutrons then the mass number is 24. So, it'sMg-24.Learn more about Isotope Representation here:brainly.com/question/31598213#SPJ3...