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As you move from left to right across a period, the number of valence electrons A. increases. B. stays the same. C. increases and then decreases. D. decreases.
Weegy: As you move from left to right across a period, the number of valence electrons increases. (More)
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Updated 1/10/2016 12:20:57 PM
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Which of the following compounds does NOT contain molecules?
Weegy: Molecules are the smallest living substance. (More)
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Updated 10/2/2012 9:32:30 AM
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The compound that does not contain molecules is WATER (H2O).
Added 10/2/2012 9:32:30 AM
The half-life of a radioisotope is the amount of time it takes for A. half the sample to decay. B. all the sample to decay. C. the age of an artifact to be calculated. D. detectable radiation to be absorbed by a sample
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Updated 81 days ago|2/5/2017 2:00:34 PM
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The half-life of a radioisotope is the amount of time it takes for half the sample to decay.
Added 81 days ago|2/5/2017 1:54:02 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Jay901 [2/5/2017 2:00:37 PM]
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