3. What happens to an electron, specifically its path, after it excites a helium atom?
An electron with a speed of 5.50×106 m/s , collides with an atom. The collision excites the atom from its ground state (0eV) to a state with an energy of 3.30 eV . What is the speed of the electron after the collision? in m/s
1A- What happens whej light "excites" an electron of a chlorophyll molecule? A- The electron moves to an electron shell that is further from the nucleus B- Nothing. Light does not have this effect on electrons C- The electron moves to an electron shell that is closer to the nucleus D- An electron is transferred to another molecule 1B- What molecule is oxidized in order to reduce the special chlorophyll a pair? A-Water B-Glucose C- None. The special chlorophyll pair...
3. Estimate the distance between the electron of a Helium atom to the nucleus if 28 MeV is needed to remove it from the atom. [Given that there are 2protons, 2 neutrons and 2 electrons in an Helium atom)
A singly ionized helium atom has an electron in the n = 1 state. What is the kinetic energy of the electron?
Describe what happens to the electron beam path when the current through the Helmholtz coils increases or decreases. Write only 2 or 3 sentences.
A helium atom has two electrons, let us call them electron 1 and 2. Suppose electron 1 is in the ground state and electron 2 is in the first excited state. 1. Calculate the minimum energies (in eV) of photons needed to eject each electron out of the atom. [5 points) 2. Draw an energy level diagram for a helium atom and indicate the transitions in part 1. You do not need to calculate the energies of various energy levels....
Part A What is the change in energy ?E of the hydrogen atom as the electron makes the transition from the n=3 energy level to the n=1 energy level? Express your answer numerically in electron volts. Part B When an atom makes a transition from a higher energy level to a lower one, a photon is released. What is the wavelength of the photon that is emitted from the atom during the transition from n=3 to n=1? Express your answer...
4. Calculate the energy and frequency of light emitted by a helium atom as an electron moves from the n=5 level to the n=2 level.
A singly ionized helium atom has only one electron bound to the nucleus. What is the radius of the ion when it is in the second excited state? r = 1.03 x 10-10m r = 1.52 x 10-10m r = 2.15 x 10-10m r = 2.38 x 10-10m
Assuming the energy diagram below is for an atom, what happens to the size of the atom when it undergoes transition a? that atom gets smaller because the electron is occupying a smaller volume that atom gets smaller because the electron is occupying a larger volume that atom gets larger because the electron is occupying a larger volume the atom gets larger because the electron is occupying a smaller volume the size of the atom does not change