MyQuestionIcon

9

You visited us 9 times! Enjoying our articles? Unlock Full Access!

Electron Affinity

Is there any ...

Question

Is there any way to measure ionisation potential of an atom

Open in App

Solution

Determine what atom you want to use for calculating the ionization energy. Identify the value of "Z" for the atom using a periodic table. (Another name for the number Z is the atomic number.) The value for Z appears above the symbol for the atom. For example, Z equals 1 for hydrogen.

Decide how many electrons the atom contains. This number is the same as Z unless the atom has already lost some electrons

Calculate the ionization energy, in units of electron volts, for a one-electron atom by squaring Z and then multiplying that result by 13.6.

For atoms with more than one electron, arrive at the ionization energy, in units of electron volts, by first subtracting one from Z, squaring the answer, and finally multiplying by 13.6.

Suggest Corrections

thumbs-up

0

Similar questions

Q. The amount of energy required to remove an electron from an isolated atom or molecule is the ionisation potential. There is an ionization energy for each successive electron removed.

Q. If the ionisation potential of an atom is 122.4 V. The second excitation potential of the atom will be

Q. If the ionisation potential of an atom is

20 V

, its first excitation potential will be :-

DEFINITION VALID FOR SINGLE ELECTRON SYSTEM:
Ground state: Lowest energy state of any atom or ion is called ground state of the atom. It is n

=

1.
Excited energy (IE): Minimum energy required to move an electron from ground state to n

= \infty

is called ionisation energy of the atom or ion.
Ionisation Potential (I.P): Potential difference through which a free electron must be accelerated from rest, such that its kinetic energy becomes equal to ionisation energy of the atom is called ionisation potential of the atom.
Excitation Energy: Energy required to move an electron from ground state of the atom to any other state of the atom is called excitation energy of that state.
Excitation Potential: Potential difference through which an electron must be accelerated from rest to so that its kinetic energy become equal to excitation energy of any state is called excitation potential of that state.
Binding Energy 'or' Separation Energy: Energy required to move an electron from any state to n=

\infty

is called binding energy of the state.
The wavelength of the photon emitted upon an electronic transition from

n_{2}

n_{1}

orbit in a H-like species is given by the formula:

\frac{1}{λ} = R Z^{2} (\frac{1}{n_{1}^{2}} - \frac{1}{n_{2}^{2}})

Now answer the following question:

If the binding energy of II excited state of a H-like species is 13.6 eV then:

Q. If the ionisation potential of an atom is

122.4 V

then its first excitation potential will be

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Ionization Energy

CHEMISTRY

Watch in App

explore_more_icon

Explore more

Electron Affinity

Standard X Chemistry

Join BYJU'S Learning Program

CrossIcon