What are the number of protons, neutrons, and electrons in the following isotopes ?
82 ^ 36 Kr
In the isotope 82 ^ 36 Kr:
- The number 36 represents the atomic number, which is equal to the number of protons in the atom. Therefore, there are 36 protons.
- The superscript number 82 represents the mass number, which is the sum of protons and neutrons in the atom. To find the number of neutrons, subtract the number of protons (36) from the mass number (82). So, there are 82 - 36 = 46 neutrons.
- The number of electrons in a neutral atom is equal to the number of protons. So, there are also 36 electrons.
To determine the number of protons, neutrons, and electrons in an isotope, we need to know the atomic number (number of protons) and the mass number (number of protons plus neutrons) of the element.
For the isotope 82^36Kr, the superscript 82 represents the mass number and the subscript 36 represents the atomic number (number of protons).
Number of protons (atomic number): The atomic number of Kr is 36, so there are 36 protons.
Number of neutrons: To find the number of neutrons, subtract the atomic number (36) from the mass number (82):
Number of neutrons = 82 - 36 = 46 neutrons.
Number of electrons: In a neutral atom, the number of electrons is equal to the number of protons. So in this case, there are also 36 electrons.
To determine the number of protons, neutrons, and electrons in an isotope, we need to understand the makeup of an isotope.
An isotope is characterized by two main components: the element symbol and the atomic number. The element symbol represents the specific element, and the atomic number indicates the number of protons in the nucleus of an atom of that particular element.
In the given isotope, 82^36Kr:
- The element symbol is "Kr," which stands for krypton.
- The atomic number is 36, which means there are 36 protons in the nucleus of the krypton atom.
Since an atom is typically electrically neutral, the number of electrons is equal to the number of protons. Therefore, in 82^36Kr, there are 36 electrons.
Now, to determine the number of neutrons, we subtract the atomic number from the mass number. The mass number represents the sum of protons and neutrons in the atom.
However, the mass number is not specified in the given isotope. To find the mass number of krypton-82 (^82Kr), we need to look up its atomic information. Krypton is usually found with different isotopes, but in this case, we assume we are referring to the most abundant isotope, which is Kr-82.
The most common isotope of an element has a mass number equal to its atomic number. Therefore, the mass number of ^82Kr is 82.
Applying this information:
- The number of protons is 36.
- The number of electrons is also 36.
- To find the number of neutrons, we subtract the atomic number (36) from the mass number (82): 82 - 36 = 46.
Thus, in the isotope ^82Kr, there are 36 protons, 46 neutrons, and 36 electrons.