How many neutrons in carbon-12 and how did you get yuor answer

The atomic number is the number of protons. Look for element number 6 on the periodic table and see carbon. For carbon, there are 6 protons.
# protons + # neutrons = mass number
6 + # neutrons = 12
# neutrons = 12 - 6 = 6.
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In carbon-12, there are 6 protons and 6 neutrons. To determine the number of neutrons, we can use the fact that the mass number is equal to the sum of the number of protons and neutrons. Since the mass number of carbon-12 is 12, we can write the equation as follows:

# protons + # neutrons = mass number

6 + # neutrons = 12

To find the number of neutrons, we can subtract the number of protons from the mass number:

# neutrons = 12 - 6 = 6

Therefore, carbon-12 has 6 neutrons.