English

Define the term Electronic configuration - Chemistry

Advertisements
Advertisements

Question

Define the term Electronic configuration

Definition

Solution

Electronic configuration of an atom is defined as the distribution of its electrons in orbitals.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Structure of Atom - Exercises [Page 54]

APPEARS IN

Balbharati Chemistry [English] 11 Standard
Chapter 4 Structure of Atom
Exercises | Q 6. (B)(iii) | Page 54

RELATED QUESTIONS

Choose the correct option.

Principal Quantum number describes -


State and explain Pauli’s exclusion principle.


Explain the anomalous behaviour of copper.


Explain the anomalous behaviour of chromium.


Write orbital notations for the electron in orbitals with the following quantum numbers.

n = 4, l = 2


Write orbital notations for the electron in orbitals with the following quantum numbers.

n = 3, l = 2


Write condensed orbital notation of electronic configuration of the following element:

Lithium (Z = 3)


Write condensed orbital notation of electronic configuration of the following element:

Chlorine (Z = 17)


Explain in brief, the significance of the azimuthal quantum number.


Write a note on ‘Principal Quantum number.


Indicate the number of unpaired electrons in \[\ce{Si}\] (Z = 14).


The designation of a subshell with n = 6 and l = 2 is ____________.


How many electrons in 19K have n = 3, l = 1?


The number of radial nodes for 3p orbital is ______.


The pair of ions having same electronic configuration is ______.


Out of the following pairs of electrons, identify the pairs of electrons present in degenerate orbitals:

(i)  (a) `n = 3, l = 2, m_l = -2, m_s = - 1/2`
  (b) `n = 3, l = 2, m_l = -1, m_s = - 1/2`
   
(ii)  (a) `n = 3, l = 1, m_l = 1, m_s = + 1/2`
  (b) `n = 3, l = 2, m_l = 1, m_s = + 1/2`
   
(iii) (a) `n = 4, l = 1, m_l = 1, m_s = + 1/2`
  (b) `n = 3, l = 2, m_l = 1, m_s = + 1/2`
   
(iv)  (a) `n = 3, l = 2, m_l = +2, m_s = - 1/2`
  (b) `n = 3, l = 2, m_l = +2, m_s = + 1/2`

Which of the following orbitals are degenerate?

3dxy, 4dxy 3dz2, 3dyz, 4dyz, 4dz2  


Calculate the total number of angular nodes and radial nodes present in 3p orbital.


The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Lower the value of (n + l), lower is the energy. For orbitals having same values of (n + l), the orbital with lower value of n will have lower energy.

Based upon the above information, arrange the following orbitals in the increasing order of energy.

5f, 6d, 7s, 7p


The arrangement of orbitals on the basis of energy is based upon their (n + l) value. Lower the value of (n + l), lower is the energy. For orbitals having same values of (n + l), the orbital with lower value of n will have lower energy.

Based upon the above information, solve the questions given below:

Which of the following orbitals has the lowest energy?

5p, 5d, 5f, 6s, 6p


The electronic configuration of valence shell of Cu is 3d104s1 and not 3d94s2. How is this configuration explained?


Match the quantum numbers with the information provided by these.

Quantum number Information provided
(i) Principal quantum number (a) orientation of the orbital
(ii) Azimuthal quantum number (b) energy and size of orbital
(iii) Magnetic quantum number (c) spin of electron
(iv) Spin quantum number (d) shape of the orbital

Match the following

(i) Photon (a) Value is 4 for N shell
(ii) Electron (b) Probability density
(iii) ψ2 (c) Always positive value
(iv) Principal quantum number n (d) Exhibits both momentum and wavelength

In the case of R, S configuration the group having the highest priority is ______.


Which of the following element do not follow Aufbau principle?


Which one of the following laws will represent the pairing of electrons in a subshell after each orbital is filled with one electron?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×