Answer :
a. Titanium-46: 22 protons, 22 electrons, 24 neutrons
b. Plutonium-242: 94 protons, 94 electrons, 148 neutrons
c. Seaborgium-263: 106 protons, 106 electrons, 157 neutrons
d. Tungsten-186: 74 protons, 74 electrons, 112 neutrons
e. Chromium-51: 24 protons, 24 electrons, 27 neutrons
f. Francium-223: 87 protons, 87 electrons, 136 neutrons
To determine the number of protons, neutrons, and electrons in each isotope, we need to understand a few key concepts:
- Protons: The number of protons in an atom is equal to the atomic number of the element.
- Electrons: In a neutral atom, the number of electrons is equal to the number of protons.
- Neutrons: The number of neutrons can be calculated by subtracting the atomic number from the mass number (mass number = protons + neutrons).
Now let's break down each isotope asked in the question:
a. Titanium-46 (Ti-46)
- Protons: 22 (atomic number of titanium)
- Electrons: 22 (same as protons in a neutral atom)
- Neutrons: 46 - 22 = 24
b. Plutonium-242 ([tex]{}_{94}^{242} \text{Pu}[/tex])
- Protons: 94 (atomic number of plutonium)
- Electrons: 94 (same as protons in a neutral atom)
- Neutrons: 242 - 94 = 148
c. Seaborgium-263 (Sg-263)
- Protons: 106 (atomic number of seaborgium)
- Electrons: 106 (same as protons in a neutral atom)
- Neutrons: 263 - 106 = 157
d. Tungsten-186 (W-186)
- Protons: 74 (atomic number of tungsten)
- Electrons: 74 (same as protons in a neutral atom)
- Neutrons: 186 - 74 = 112
e. Chromium-51 ([tex]{}_{24}^{51} \text{Cr}[/tex])
- Protons: 24 (atomic number of chromium)
- Electrons: 24 (same as protons in a neutral atom)
- Neutrons: 51 - 24 = 27
f. Francium-223 (Fr-223)
- Protons: 87 (atomic number of francium)
- Electrons: 87 (same as protons in a neutral atom)
- Neutrons: 223 - 87 = 136