how many protons, electrons, and neutrons are in the following isotopes.
uranium-235
hydrogen-3
silicon-29
The number of protons is the atomic number.
The mass number is the number of protons + the number of neutrons.
The number of electrons is the same as the number of protons(in a neutral element).
so for uranium would it be
protons 92
electrons 145
neutrons 145
sorry i must have misread it
but thank u soooo much
To determine the number of protons, electrons, and neutrons in an isotope, we need to understand the atomic structure of an atom.
1. Uranium-235:
- The name of the element is uranium.
- The number 235 represents the atomic mass of the isotope, which is the sum of protons and neutrons.
- Uranium has an atomic number of 92, which means it has 92 protons.
- To determine the number of electrons, we assume the atom is neutral, meaning it has the same number of protons and electrons. So, uranium-235 will also have 92 electrons.
- To calculate the number of neutrons, subtract the number of protons (92) from the atomic mass (235). Therefore, uranium-235 has 143 neutrons.
So, uranium-235 has 92 protons, 92 electrons, and 143 neutrons.
2. Hydrogen-3:
- The name of the element is hydrogen.
- The number 3 represents the atomic mass of the isotope.
- Hydrogen has an atomic number of 1, which means it has 1 proton.
- Since the atomic number dictates the number of electrons in a neutral atom, hydrogen-3 will also have 1 electron.
- To calculate the number of neutrons, subtract the number of protons (1) from the atomic mass (3). Therefore, hydrogen-3 has 2 neutrons.
So, hydrogen-3 has 1 proton, 1 electron, and 2 neutrons.
3. Silicon-29:
- The name of the element is silicon.
- The number 29 represents the atomic mass of the isotope.
- Silicon has an atomic number of 14, which means it has 14 protons.
- Similar to the previous cases, a neutral silicon-29 atom will have 14 electrons.
- To calculate the number of neutrons, subtract the number of protons (14) from the atomic mass (29). Therefore, silicon-29 has 15 neutrons.
So, silicon-29 has 14 protons, 14 electrons, and 15 neutrons.
Did you read what I wrote?
The number of protons is the atomic number. 92 is correct.
The number of electrons is the same as the number of protons which must be 92.
The number of neutrons is mass number-atomic number = 235-92=143.