Electron Configuration
What is the electron configuration for Ga?
What is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^1
What is the difference between the Plum Pudding Model and the Rutherford Model?
In the Plum Pudding Model, protons were more uniformly distributed throughout the atom. In the Rutherford model, the protons were more localized.
What is the binding energy?
The amount of energy required to move the electron farther from the nucleus.
In order to fill the 3d orbital, what orbital must be filled in first?
What is the 4s orbital
What is the electron configuration of La?
What is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 5d^1
Why are alpha particles released from the radioactive source?
U-238 nucleus breaks down into the Th-234 nucleus. Since U has 92 protons and Th has 90 protons, this means that helium nuclei (alpha particles) are also released.
Why does the 1s subshell have a higher binding energy than the 2s subshell?
The 1s subshell is located in the first shell and the 2s subshell is located in the second shell. The distance between the first shell and the nucleus is less than the distance of the second shell from the nucleus. The nucleus attracts the first shell more.
Out of these four orbitals, which one has the most energy: 1s 2p 3d 4s?
What is the 3d orbital
What is the electron configuration of Re?
What is 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^10 4p^6 5s^2 4d^10 5p^6 6s^2 4f^14 5d^5
Why do the alpha particles have significant kinetic energy?
The U-238 is quite unstable, giving it a high potential energy. The Th-234 is more stable giving it a lower potential energy. This gives the opportunity for alpha particles to pick up quite a bit of kinetic energy.
Why does the number of peaks in the PES spectrum correspond to the number of subshells?
Each subshell has a different binding energy.
True or False The orbitals are filled from highest energy level to the lowest energy level.
What is false
Why is Zn considered a fairly stable element?
All the subshells are filled.
Why is the atom considered to be mostly empty space?
Electrons have almost no mass and take up very little volume. The protons are concentrated in a tiny volume.
Why wouldn't infrared radiation be suitable as an energy source for elements?
Infrared radiation has much less energy than ultraviolet radiation or X rays. There may not even be enough energy to overcome the binding energy.
Why is a N atom more stable than an O atom?
The 2p subshell of N is half-filled.
Why was gold used in the Rutherford gold foil experiment?
Gold is very ductile (can be shaped into a wire) so the gold foil can be made super thin, making it easier for the alpha particles to pass through the foil and reach the screen coated with zinc sulfide.
Why is the amounts of electrons corresponding to a specific binding energy fairly accurate?
There are so many atoms in even a small sample of an element. With a large sample of electrons within the subshells, even though the velocities may vary, you can get a reliable comparison of sets of electrons with a particular binding energy.