Question Detail

CHM 101 CHM 101 Past Questions Objective Question
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Question

Why is the atomic mass of carbon 12.01 instead of 12.00?
Options
A Presence of electrons
B Existence of isotopes
Correct Answer
C Instrument calibration
D Temperature fluctuations
Correct Answer

Option B is the correct answer.

Detailed Explanation

The atomic mass of carbon is the weighted average of the masses of its naturally occurring isotopes. While carbon-12 is the most abundant, there are small amounts of carbon-13 and carbon-14, which increase the average atomic mass to 12.01.

Hint

Most elements exist in multiple forms with different numbers of neutrons.

Question Info

Course: CHM 101
Topic: CHM 101 Past Questions
Type: Objective
Difficulty: Not specified
Question 340 of 1872
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