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rewona [7]
3 years ago
13

Oxygen has an atomic number of 8. The n = 1 energy level has two electrons, and the n = 2 energy level has six electrons. Oxygen

's valence is _____.
-2
-1
+2
+1
Biology
2 answers:
VladimirAG [237]3 years ago
7 0

Answer:

The correct answer is -2

Oxygen has 6 valence electrons, which is 2 electrons short of a neutral charge, thus it is -2

Alex73 [517]3 years ago
6 0
-2,-1 2-2=4 . hope this helps
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In the genes of eukaryotic organisms, the exons are the segments of an RNA precursor that are conserved in the RNA after splicing and that are found in mature RNA in the cytoplasm. The segments of the RNA precursor that are removed during splicing are called in opposition to introns. Exons are mainly found in messenger RNAs (mRNAs) encoding proteins. Some mRNAs may sometimes undergo an alternative splicing process in which one or more exons may be excised or some introns preserved in rare cases.

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<h3>What is payback period?</h3>

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