Answer
Verified
344.1k+ views
Hint: The nucleus of the atom contains the protons and the neutrons. The outermost regions of the atom are called electron shells and contain the electrons which are negatively charged. Electrons revolve in different orbits having different energy levels. For arrangement of electrons in each shell, Bohr bury rule is applied.
Complete answer:
- Iron has the atomic number 26 and the electronic configuration is shown below
\begin{align*}1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{6}\end{align*}
- We will fill up the corresponding orbitals with electrons until you find out the electron arrangement, any left with one is called unpaired electron. The box figure of the outer electronic configuration would appear as
- Therefore, the number of unpaired electrons in iron is 4.
Additional information:
Each atomic orbital of an electron has capacity to contain two electrons which are of opposite spin value i.e., if one electron is in the state of clockwise then another will be in anticlockwise state and this was explained by Pauli exclusion principle.
Note:
Whenever two electrons are paired together in an orbital, or their total spin is zero, they are diamagnetic electrons. Atoms with all diamagnetic electrons are called diamagnetic atoms. A paramagnetic electron is an unpaired electron. An atom is considered paramagnetic if even one orbital has a net spin. Always make sure to remember the concepts of pairing and that is going to help you in understanding the concept of diamagnetic and paramagnetic nature of a substance that will be further useful.
Complete answer:
- Iron has the atomic number 26 and the electronic configuration is shown below
\begin{align*}1s^{2}2s^{2}2p^{6}3s^{2}3p^{6}4s^{2}3d^{6}\end{align*}
- We will fill up the corresponding orbitals with electrons until you find out the electron arrangement, any left with one is called unpaired electron. The box figure of the outer electronic configuration would appear as
- Therefore, the number of unpaired electrons in iron is 4.
Additional information:
Each atomic orbital of an electron has capacity to contain two electrons which are of opposite spin value i.e., if one electron is in the state of clockwise then another will be in anticlockwise state and this was explained by Pauli exclusion principle.
Note:
Whenever two electrons are paired together in an orbital, or their total spin is zero, they are diamagnetic electrons. Atoms with all diamagnetic electrons are called diamagnetic atoms. A paramagnetic electron is an unpaired electron. An atom is considered paramagnetic if even one orbital has a net spin. Always make sure to remember the concepts of pairing and that is going to help you in understanding the concept of diamagnetic and paramagnetic nature of a substance that will be further useful.
Recently Updated Pages
Basicity of sulphurous acid and sulphuric acid are
Three beakers labelled as A B and C each containing 25 mL of water were taken A small amount of NaOH anhydrous CuSO4 and NaCl were added to the beakers A B and C respectively It was observed that there was an increase in the temperature of the solutions contained in beakers A and B whereas in case of beaker C the temperature of the solution falls Which one of the following statements isarecorrect i In beakers A and B exothermic process has occurred ii In beakers A and B endothermic process has occurred iii In beaker C exothermic process has occurred iv In beaker C endothermic process has occurred
What is the stopping potential when the metal with class 12 physics JEE_Main
The momentum of a photon is 2 times 10 16gm cmsec Its class 12 physics JEE_Main
How do you arrange NH4 + BF3 H2O C2H2 in increasing class 11 chemistry CBSE
Is H mCT and q mCT the same thing If so which is more class 11 chemistry CBSE
Trending doubts
State the differences between manure and fertilize class 8 biology CBSE
Why are xylem and phloem called complex tissues aBoth class 11 biology CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Difference Between Plant Cell and Animal Cell
What would happen if plasma membrane ruptures or breaks class 11 biology CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
What precautions do you take while observing the nucleus class 11 biology CBSE
What would happen to the life of a cell if there was class 11 biology CBSE
Change the following sentences into negative and interrogative class 10 english CBSE