Question

consider the figure below: atomic number 6 c 12 chemical symbol 6 c 13 mass number how many neutrons do carbon-12 and carbon-13 have, respectively? carbon-12: 12 neutrons; carbon-13: 13 neutrons carbon-12: 19 neutrons; carbon-13: 18 neutrons carbon-12: 13 neutrons; carbon-13: 12 neutrons carbon-12: 18 neutrons; carbon-13: 19 neutrons carbon-12: 6 neutrons; carbon-13: 7 neutrons

Explanation:

Step1: Recall neutron calculation formula

The number of neutrons ($n$) in an atom is calculated by the formula $n = \text{Mass number} - \text{Atomic number}$.

Step2: Calculate neutrons for carbon - 12

For carbon - 12, the mass number is 12 and the atomic number (from the figure, the atomic number of carbon is 6) is 6. So, $n_{12}=12 - 6=6$.

Step3: Calculate neutrons for carbon - 13

For carbon - 13, the mass number is 13 and the atomic number is 6. So, $n_{13}=13 - 6 = 7$.

Answer:

carbon - 12: 6 neutrons; carbon - 13: 7 neutrons