Advertisements
Advertisements
Question
The total energy of an electron in the first excited state of the hydrogen atom is about −3.4 eV.
What is the kinetic energy of the electron in this state?
Advertisements
Solution
Total energy of the electron, E = −3.4 eV
Kinetic energy of the electron is equal to the negative of the total energy.
⇒ K = −E
= − (−3.4)
= +3.4 eV
Hence, the kinetic energy of the electron in the given state is +3.4 eV.
APPEARS IN
RELATED QUESTIONS
A 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature. Upto which energy level the hydrogen atoms would be excited? Calculate the wavelengths of the first member of Lyman and first member of Balmer series.
The ground state energy of a hydrogen atom is −13.6 eV. What are the kinetic and potential energies of the electron in this state?
A hydrogen atom initially in the ground level absorbs a photon, which excites it to the n = 4 level. Determine the wavelength and frequency of the photon.
The total energy of an electron in the first excited state of the hydrogen atom is about −3.4 eV.
What is the potential energy of the electron in this state?
Obtain the first Bohr’s radius and the ground state energy of a muonic hydrogen atom [i.e., an atom in which a negatively charged muon (μ−) of mass about 207 me orbits around a proton].
Wavelengths of the first lines of the Lyman series, Paschen series and Balmer series, in hydrogen spectrum are denoted by `lambda_L, lambda_P and lambda_B` respectively. Arrange these wavelengths in increasing order.
The energy levels of an atom are as shown below. Which of them will result in the transition of a photon of wavelength 275 nm?
Which transition corresponds to emission of radiation of maximum wavelength?
Calculate the minimum amount of energy which a gamma ray photon should have for the production of an electron and a positron pair..
A Carnot engine absorbs 1000 J of heat energy from a reservoir at 127°C and rejects 600 J of heat energy during each cycle. The efficiency of the engine and temperature of the sink will be:
The Ionisation energy of hydrogen atom is 3.6 ev The ionisation energy of helium atom would be
Energy of an electron at infinity from nucleus is ______.
Two H atoms in the ground state collide inelastically. The maximum amount by which their combined kinetic energy is reduced is ______.
Radiation coming from transitions n = 2 to n = 1 of hydrogen atoms fall on He+ ions in n = 1 and n = 2 states. The possible transition of helium ions as they absorb energy from the radiation is ______.
Which of the following is true for X-rays?
