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Author Question: An atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has: (Read 78 times)

Bob-Dole

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on: Jul 8, 2021
An atom that has an atomic number of 20 and a mass number of 42 is an isotope of an atom that has:
◦ an atomic number of 21 and a mass number of 42
◦ an atomic number of 20 and a mass number of 40
◦ 22 neutrons and 20 protons
◦ 22 protons and 20 neutrons
General Chemistry: Principles and Modern Applications ¦ Petrucci, Herring, Madura, Bissonnette ¦ 11th Edition
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Marked as best answer by Bob-Dole on Jul 8, 2021

mistyjohnson

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Reply #1 on: Jul 8, 2021
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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Bob-Dole

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Reply 2 on: Jul 8, 2021
Wow, this really help

fatboyy09

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Reply 3 on: Yesterday
Excellent

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