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Grade: 12

                        

If an element emits photon in its ground state due to electronic transition,then its atomic no. decreases,WHY??? D-orbital is non-degenerate,WHY? The de-broglie wavelenght of an electron accelerated by an electric field of V volts is 1.23/V nm,i need its solution???

9 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
							

Dear student,

When an electron is bound to an atom, it has a potential energy that is inversely proportional to its distance from the nucleus. This is measured by the amount of energy needed to unbind the electron from the atom, and is usually given in units of electronvolts (eV). In the quantum mechanical model, a bound electron can only occupy a set of states centered on the nucleus, and each state corresponds to a specific energy level. The lowest energy state of a bound electron is called the ground state, while an electron at a higher energy level is in an excited state.

 

all the five d-orbitals have the same energy, i.e., they are degenerate (meaning energetically alike).

 

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Askiitians Expert

Sagar Singh

B.Tech, IIT Delhi

9 years ago
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