Quiz: Isotope & Nomenclature

Which of the following statements correctly describes isotopes?

• Isotopes are atoms of a given element that have different numbers of protons and neutrons.

• Isotopes have the same atomic number but different mass numbers.

• Isotopes have different chemical properties and different atomic charges.

• Isotopes occupy different positions in the periodic table.

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What is a defining characteristic of isotopes of the same element?

• They have different numbers of protons.

• They have the same number of neutrons.

• They have the same chemical properties.

• They have different atomic numbers.

In the symbol ( ^2H_1 ), what does the superscript 2 represent?

• The number of protons

• The number of neutrons

• The atomic number

• The mass number

What is the relationship between the mass number and the number of neutrons in

( ^3H_1 )?

• The mass number is equal to the number of neutrons.

• The mass number is the sum of protons and neutrons.

• The mass number is equal to the number of protons.

• The mass number is equal to the number of electrons.

What is another name for radioisotopes?

• Radioactive isotopes

• Non-radioactive isotopes

• Stable isotopes

• Neutral isotopes

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Which of the following best describes the process of a radioisotope decaying?

• It absorbs radiation and becomes unstable

• It loses protons and becomes a different element

• It emits radiation and transforms into a more stable form

• It gains neutrons and becomes radioactive

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Which of the following isotopes are commonly used in environmental and ecological investigations?

• Oxygen, hydrogen, sulfur, nitrogen, and carbon

• Helium, neon, argon, krypton, and xenon

• Iron, copper, zinc, lead, and mercury

• Sodium, potassium, calcium, magnesium, and chlorine

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In which of the following places are radioisotopes commonly used?

• Sports arenas, concert halls, and shopping malls

• Libraries, museums, and theaters

• Schools, parks, and restaurants

• Research laboratories, medical institutes, and industrial facilities

What is one of the main uses of radioisotopes in medical institutes?

• Sterilizing surgical instruments

• Diagnosing and treating diseases

• Building medical equipment

• Training medical students

What is the main difference between a stable isotope and an unstable isotope?

• Stable isotopes are heavier.

• Unstable isotopes do not undergo radioactive decay.

• Stable isotopes do not undergo radioactive decay. 

• Unstable isotopes are found only in laboratories.

Tags

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