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4 cards from this section. Quick, good the night before a test.
What is the charge of an electron?
Remember the charge of the basic particles.
How many electrons can the first shell hold?
Think of the formula 2n² for maximum electrons.
What is the charge of a proton?
Recall the charges of basic atomic particles.
The octet rule states that atoms tend to have how many electrons in their outer shell?
Consider how atoms behave to achieve stability.
An element has an atomic number of 9 and a mass number of 19. Determine the number of protons, neutrons, and electrons it contains.
Use the definitions of atomic and mass numbers.
Describe how sodium (Na) and chlorine (Cl) form an ionic bond, and what happens to their charges during this process.
Consider the electron transfer process.
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