When Can We Say That Atom Has No Vacancy,or the Atom

question 25

Multiple Choice

When can we say that atom has no vacancy,or the atom is full?  

• A) An atom's outer shell is filled with electrons
• B) An atom's inner shell is filled with electrons
• C) An atom's outer shell is filled with neutrons
• D) An atom's outer shell is filled with protons
• E) An atom's inner shell is filled with protons

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