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.
Correct Answer:
Verified
Correct Answer:
Verified
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