NARENDRA AWASTHI ENGLISH|Exercise Match the column|1 Videos
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A new electron enters the orbital when:
When 3d orbital is complete, the new electron will enter the
Assertion: La should be the f-block element according to Aufbau principle. Reason: 57th electron exceptionally enters in 5d orbital. If both (A) and (R) are correct and (R) is the correct explanation of (A). If both (A) and (R) are correct, but (R) is not the correct explanation of (A). If (A) is correct, but (R) is incorrect. If (A) is incorrect but (R) is correct.
Using the Aufbau principle , write the electronic configuration for the following atoms : boron (Z = 5) , neon (Z = 10) , aluminum (Z = 13) , chlorine (Z = 17) , calcium (Z = 20) and rubidium (Z = 37) .
Electron Orbits
a. In the sixth period, after filling of 6p orbitals, the next electron (i.e. 57th ) enters the 5d -orbital against aufbau principal and there after the filling of seven 4f -orbitals starts with cerium (Z = 71) . Explain this anomalous behaviour.
According to aufbau principle, the correct order of energy of 3d, 4s and 4p-orbitals is
The orbital angular momentum of an electron which is present in p orbital is
What is Aufbau principle? How is it helpful in the filling up of electrons in various orbitals in an atom?
In transition elements, the last electron enters in the
