Argon Has Atomic Number 18

question 95

Multiple Choice

Argon has atomic number 18. Which of the following statements about argon is true?

• A) It has 10 electrons in its outer electron shell.
• B) It is inert.
• C) It has an atomic mass of 18 daltons.
• D) It has six valence electrons.
• E) It resides in the first column of the periodic table.

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Jurisdiction

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