How many protons, electrons, and neutrons are in an atom of carbon-13?
The Correct Answer and Explanation is:
Carbon-13 ((^{13}\text{C})) is a stable isotope of carbon, one of the most abundant elements in the universe and a fundamental building block of life. To understand the atomic structure of carbon-13, we need to look at its protons, electrons, and neutrons.
Protons
Carbon is located in group 14 of the periodic table, and every carbon atom has 6 protons. The number of protons in an atom determines its atomic number, which is also the defining characteristic of the element. Therefore, the atomic number of carbon is 6.
Electrons
In a neutral atom, the number of electrons equals the number of protons, balancing the electrical charge. Since carbon-13 has 6 protons, it also has 6 electrons. These electrons are arranged in shells around the nucleus and play a crucial role in the atom’s chemical behavior and bonding with other elements.
Neutrons
The number of neutrons in an atom can be found by subtracting the atomic number from the mass number. The mass number of carbon-13 is 13, which represents the total number of protons and neutrons in the nucleus. Thus, the number of neutrons in carbon-13 can be calculated as follows:
[
\text{Number of neutrons} = \text{Mass number} – \text{Atomic number} = 13 – 6 = 7
]
Summary
In summary, an atom of carbon-13 consists of:
- Protons: 6
- Electrons: 6
- Neutrons: 7
This configuration makes carbon-13 unique, as it is one of the two stable isotopes of carbon, the other being carbon-12. The presence of an additional neutron in carbon-13 compared to carbon-12 does not significantly affect its chemical properties, but it plays an essential role in nuclear reactions and isotopic studies, including applications in radiocarbon dating and nuclear magnetic resonance (NMR) spectroscopy. Understanding isotopes like carbon-13 enhances our knowledge of both chemistry and biology.