Draw Bohr diagrams of the following:
A) O and O2-
I know how to draw the regular O bohr diagram. 2 electrons in the first shell, and 6 in the outer one, but I don't get how to draw a 02- diagram. Do I just take away 2 electrons from the outer shell?
you add 2 electrons
oh, so its the opposite, thanks
To draw the Bohr diagram for oxygen (O), you are correct that there are 2 electrons in the first shell and 6 electrons in the outer shell. The atomic number of oxygen is 8, so it has 8 protons and 8 electrons in its neutral state.
Now, for the Bohr diagram of the O2- ion, we need to account for the charge. The "-2" charge means that 2 electrons are gained by the oxygen atom, resulting in a total of 10 electrons.
To draw the Bohr diagram for O2-, you start with the first shell and fill it with 2 electrons since it can hold a maximum of 2 electrons. Then, you place the remaining 8 electrons in the outer shell, as in the Bohr diagram for oxygen. It is important to note that the Bohr diagram represents the energy levels or shells, not the exact location of the electrons.
The completed Bohr diagram of O2- would look like this:
1st shell (closest to the nucleus): 2 electrons
2nd shell (outer shell): 8 electrons
O2-: 2 electrons
8 electrons
This diagram shows how O2- has 10 electrons, with the first shell containing 2 electrons and the outer shell containing 8 electrons.
To draw the Bohr diagrams of O and O2-, you need to understand the atomic structure and electron configuration.
A) Oxygen (O):
- Atomic Number: 8
- Electron Configuration: 1s² 2s² 2p⁴
To draw the Bohr diagram for O:
1. Start with the nucleus in the center. Label it as O.
2. The first energy level (n=1) can hold a maximum of 2 electrons. Draw two small circles around the nucleus to represent the first energy level.
3. The remaining 6 electrons of oxygen are distributed in the second energy level (n=2). Draw a larger circle around the smaller ones to represent the second energy level.
4. Place 2 electrons in the first energy level and 6 electrons in the second energy level, following the electron configuration: 2, 6.
The Bohr diagram of oxygen (O) will have two small circles in the innermost energy level and a larger circle in the outer energy level, with 2 electrons in the inner circle and 6 electrons in the outer circle.
B) Oxide ion (O2-):
- Oxide (O²-) has gained two electrons compared to oxygen (O).
To draw the Bohr diagram for O2-:
1. Start with the nucleus in the center. Label it as O2-.
2. The first energy level (n=1) remains the same. Draw two small circles around the nucleus to represent the first energy level.
3. In O²-, since two electrons have been gained, remove two electrons from the outer energy level of O. This means there will be a total of 8 electrons.
4. Draw a larger circle around the smaller circles to represent the second energy level (n=2).
5. Place 2 electrons in the first energy level, just like in O. In the second energy level, place the remaining 6 electrons.
The Bohr diagram of oxide ion (O2-) will have two small circles in the innermost energy level and a larger circle in the outer energy level, with 2 electrons in the inner circle and 6 electrons in the outer circle, just like oxygen (O). The only difference is that the label will be O2- to indicate the negatively charged ion.
Remember, Bohr diagrams are a simplification of the electron configuration to show the arrangement of electrons in different energy levels.