(238) atomic number
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Description and Tags
These flashcards cover key concepts from the ATI TEAS study guide, focusing on atomic structure, including mass number, protons, neutrons, and electrons.
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9 Terms
What can the mass number be used to determine?
The total number of protons and neutrons in an atom.
What is the mass number of Argon discussed in the notes?
40.
How is the number of neutrons calculated?
Number of neutrons = mass number - number of protons.
In the case of Argon-40, how many neutrons are present?
22 neutrons.
How can the number of electrons in a neutral atom be determined?
It is assumed to be equal to the number of protons.
What is the atomic number of Argon?
18.
How many electrons does a neutral atom of Argon have?
18 electrons.
What does the atomic number of an element represent?
The number of protons in the atom.
If an atom is neutral, how does the charge compare to protons?
It has an equal number of positively charged protons.
