Isotope Notation

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•
Chemistry
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is isotope notation?
Back
Isotope notation is a way to represent isotopes of an element, typically written as 'Element Symbol - Mass Number'. The mass number is the total number of protons and neutrons in the nucleus.
2.
FLASHCARD QUESTION
Front
What does the mass number represent in isotope notation?
Back
The mass number represents the total number of protons and neutrons in an atom's nucleus.
3.
FLASHCARD QUESTION
Front
How do you determine the number of neutrons in an isotope?
Back
To find the number of neutrons, subtract the atomic number (number of protons) from the mass number.
4.
FLASHCARD QUESTION
Front
What is the atomic number of an element?
Back
The atomic number is the number of protons in the nucleus of an atom, which also determines the element's identity.
5.
FLASHCARD QUESTION
Front
If an atom has 14 neutrons and its mass number is 27, what is the atomic number?
Back
The atomic number is 13, calculated as 27 (mass number) - 14 (neutrons).
6.
FLASHCARD QUESTION
Front
What does a positive charge on an atom indicate about its electrons?
Back
A positive charge indicates that the atom has lost electrons. The number of electrons is equal to the atomic number minus the charge.
7.
FLASHCARD QUESTION
Front
If an atom of oxygen has a charge of -2, how many electrons does it have?
Back
It has 10 electrons, calculated as 8 (atomic number) + 2 (negative charge).
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