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Question 3.Why is the atomic mass of carbon not a whole number as listed
in the periodic table?*
O A. Because Carbon-14 is used to date fossils.
B. The most stable artificial radioisotope is carbon-11.
C. Because carbon needs 4 extra electrons to complete its valence shell.
D. Because it is the weighted average of the three naturally-occurring isotopes of
carbon
Answers: 3
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In the lab, ammonia was mixed with water to form ammonium hydroxide. what is/are the reactant(s)? o water and ammonia o ammonia o ammonium hydroxide need
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Question 3.Why is the atomic mass of carbon not a whole number as listed
in the periodic table?*
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