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Which of these elements do not have atoms whose outer shells are full of electrons? A) neon B) argon C) radium D) krypton

Which of these elements do not have atoms whose outer shells are full of electrons? A) neon B) argon C) radium D) krypton
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3 votes
Which of these elements do not have atoms whose outer shells are full of electrons?

A) neon
B) argon
C) radium
D) krypton

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User Machinery
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8.4k points

1 Answer

3 votes
The answer is radium. Recall that all of the elements with full electron shells are on the column to the farthest right on the periodic table. These are known as Noble Gases, and are nonreactive.
answered
User Bendik Knapstad
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