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.
RELATED QUESTIONS
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.
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].
What are means by pair annihilation? Write a balanced equation for the same.
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.
A 12.9 eV beam of electronic is used to bombard gaseous hydrogen at room temperature. Upto which energy level the hydrogen atoms would be excited ?
Calculate the wavelength of the first member of Paschen series and first member of Balmer series.
A 12.3 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 second member of Lyman series and second member of Balmer series.
Draw the energy level diagram showing how the line spectra corresponding to Paschen series occur due to transition between energy levels.
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..
The Ionisation energy of hydrogen atom is 3.6 ev The ionisation energy of helium atom would be
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 ______.
The diagram shows the four energy levels of an electron in the Bohr model of the hydrogen atom. Identify the transition in which the emitted photon will have the highest energy.
Which state corresponds to the lowest energy of the hydrogen atom?
What can happen when a hydrogen atom absorbs energy?
How much energy is required to raise a hydrogen atom from the ground state to the first excited state?
What is the energy of the atom when the electron jumps to the third orbit?
