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Questions and Answers
What is the atomic notation for Oxygen-16?
What is the atomic notation for Oxygen-16?
Which statement accurately describes the arrangement of subatomic particles in an atom?
Which statement accurately describes the arrangement of subatomic particles in an atom?
What distinguishes isotopes of the same element from one another?
What distinguishes isotopes of the same element from one another?
Which element has an atomic number of 24 and a mass number of 52?
Which element has an atomic number of 24 and a mass number of 52?
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Which of the following isotopes contains the largest number of neutrons per atom?
Which of the following isotopes contains the largest number of neutrons per atom?
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What is the number of neutrons in Nickel-58?
What is the number of neutrons in Nickel-58?
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Which isotope of phosphorus has the atomic number 15?
Which isotope of phosphorus has the atomic number 15?
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What is the average atomic mass of chlorine based on its isotopes?
What is the average atomic mass of chlorine based on its isotopes?
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How many electrons does the isotope Iodine-127 have?
How many electrons does the isotope Iodine-127 have?
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What is the total number of neutrons in Krypton-84?
What is the total number of neutrons in Krypton-84?
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Study Notes
Atomic Structure
- Protons and neutrons reside in the atom's nucleus, while electrons surround the nucleus.
- John Dalton proposed the first atomic theory.
- J. J. Thomson discovered the electron.
- Ernest Rutherford discovered the nucleus.
- Atomic number represents protons.
- Mass number represents protons and neutrons.
Isotopes
- Isotopes are atoms of the same element with the same number of protons but different numbers of neutrons.
- Isotopes have different mass numbers.
- The number of protons in an isotope is equal to the atomic number.
- The number of electrons in an isotope is equal to the number of protons.
- The number of neutrons in an isotope is calculated by subtracting the atomic number from the mass number.
Average Atomic Mass
- The average atomic mass is calculated considering the relative abundance of each naturally occurring isotope of an element.
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Description
Test your knowledge on atomic structure, isotopes, and average atomic mass. This quiz covers key concepts such as the roles of protons and neutrons, historical discoveries in atomic theory, and calculations related to isotopes. Get ready to reinforce your understanding of fundamental chemistry concepts!
