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Which particles are counted to determine the mass number of an atom?
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2. Atoms & Elements
The Atom
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What is the atomic number of a carbon atom that has 6 protons?
A
14
B
6
C
12
D
8
Guida verificata passo dopo passo1
Recall that the atomic number of an element is defined as the number of protons in the nucleus of its atom.
Identify the number of protons given in the problem, which is 6 for the carbon atom.
Understand that the atomic number corresponds directly to the number of protons, so the atomic number of this carbon atom is 6.
Note that the atomic number uniquely identifies the element on the periodic table; for carbon, this number is always 6 regardless of the isotope.
Therefore, the atomic number of a carbon atom with 6 protons is 6.
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