Multiple Choice
How many neutrons are present in an isotope of selenium-83?
70
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2. Atoms & Elements
Isotopes
Back2. Atoms & Elements
Isotopes
- Multiple ChoiceArsenic has an atomic number of 33 and its most common isotope has a mass number of 75. How many neutrons are present in this isotope of arsenic?56views
- Multiple ChoiceWhich of the following best describes the difference in atomic structure between carbon-12 and carbon-14?75views
- Multiple ChoiceHow many neutrons does a nitrogen atom typically have if its atomic number is 7 and its most common isotope has a mass number of 14?409views
- Multiple ChoiceWhich of the following correctly describes how to calculate the number of neutrons (n) in an atom?64views
- Multiple ChoiceHow many protons and neutrons are present in an atom of magnesium-25?101views
- Multiple ChoiceBoron occurs naturally as two isotopes. What is the primary difference between these isotopes?52views
- Multiple ChoiceWhich of the following is an example of a radioactive isotope?72views
- Multiple ChoiceWhich of the following best explains why carbon-14 is the most common isotope used for radiometric dating of once-living materials?70views
- Multiple ChoiceAn atom with an atomic number of 12 and a mass number of 25 can best be described by which of these?359views
- Multiple ChoiceHow many neutrons are present in the isotope lithium-6?72views
- Multiple ChoiceAn atom has an atomic number of 6 and a mass number of 14. How many neutrons does this atom have?93views
- Multiple ChoiceWhen an atom loses a neutron, which of the following best describes the result?68views
- Multiple ChoiceCopper has two naturally occurring isotopes: copper-63 and copper-65. How many neutrons are present in an atom of copper-65?63views
- Multiple ChoiceWhat is the mass number of an atom of potassium that has 20 neutrons?404views