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Questions and Answers
How do isotopes of the same element differ?
How do isotopes of the same element differ?
- They have different numbers of neutrons. (correct)
- They have different numbers of protons.
- They have different atomic numbers.
- They have different numbers of electrons.
Which of the following describes the 'Mass Number (A)' in standard notation?
Which of the following describes the 'Mass Number (A)' in standard notation?
- The number of protons in the nucleus.
- The number of electrons orbiting the nucleus.
- The total number of protons and neutrons in the nucleus. (correct)
- The total number of protons and electrons in the nucleus.
What does the 'Atomic Number (Z)' represent in standard notation?
What does the 'Atomic Number (Z)' represent in standard notation?
- The number of electrons orbiting the nucleus.
- The total number of protons and neutrons.
- The number of neutrons in the nucleus.
- The number of protons in the nucleus. (correct)
Which notation correctly identifies an isotope of Helium with 2 protons and 3 neutrons?
Which notation correctly identifies an isotope of Helium with 2 protons and 3 neutrons?
Two atoms are isotopes if they have the same number of ____ but a different number of ____.
Two atoms are isotopes if they have the same number of ____ but a different number of ____.
In standard notation, which of the following remains the same for all isotopes of an element?
In standard notation, which of the following remains the same for all isotopes of an element?
Which of the following represents the standard notation for an element?
Which of the following represents the standard notation for an element?
If an atom has an atomic number of 17 and a mass number of 35, how many neutrons does it have?
If an atom has an atomic number of 17 and a mass number of 35, how many neutrons does it have?
Which of the following is true regarding Carbon-12 and Carbon-14?
Which of the following is true regarding Carbon-12 and Carbon-14?
Given the element $_{6}^{14}C$, what does the number 14 represent?
Given the element $_{6}^{14}C$, what does the number 14 represent?
Flashcards
Isotopes
Isotopes
Atoms of the same element that have different numbers of neutrons.
Element Symbol
Element Symbol
The letter or letters that represent a specific element on the periodic table.
Atomic Number (Z)
Atomic Number (Z)
The number of protons found in the nucleus of an atom of an element.
Mass Number (A)
Mass Number (A)
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Study Notes
- Isotopes are atoms of the same element that contain differing numbers of neutrons.
- Carbon-12 and Carbon-14 are examples of isotopes of carbon.
Standard Notation
- Standard Notation includes the element symbol, atomic number, and mass number.
- Element Symbol: The letter or letters representing the element.
- Atomic Number (Z): The number of protons in the nucleus of an atom.
- Mass Number (A): The total number of protons and neutrons found in the nucleus of an atom.
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