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Which is the correct relationship-...

Which is the correct relationship-

A

`E_(1)` of `H=1//2E_(2)` of `He^(+)=1//3E_(3)`of `Li^(2+)=1//4E_(4)`of `Be^(3+)`

B

`E_(1)(H)=E_(2)(He^(+))=E_(3)(Li^(2+))=E_(4)(Be^(3+))`

C

`E_(1)(H)=2E_(2)(He^(+))=3E_(3)(Li^(2+))=4E_(4)(Be^(3+))`

D

No relation

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AI Generated Solution

The correct Answer is:
To solve the question regarding the correct relationship for the energy of hydrogen, helium, lithium, and beryllium ions, we will use the formula for the energy of an electron in a hydrogen-like atom: \[ E_n = -\frac{13.6 Z^2}{n^2} \text{ eV} \] where: - \( E_n \) is the energy of the electron, - \( Z \) is the atomic number, - \( n \) is the principal quantum number. ### Step-by-Step Solution: 1. **Calculate Energy for Hydrogen (H)**: - For hydrogen, \( Z = 1 \) and \( n = 1 \). \[ E_1 = -\frac{13.6 \times 1^2}{1^2} = -13.6 \text{ eV} \] 2. **Calculate Energy for Helium Ion (He\(^+\))**: - For helium ion, \( Z = 2 \) and \( n = 1 \). \[ E_2 = -\frac{13.6 \times 2^2}{1^2} = -\frac{13.6 \times 4}{1} = -54.4 \text{ eV} \] 3. **Calculate Energy for Lithium Ion (Li\(^{2+}\))**: - For lithium ion, \( Z = 3 \) and \( n = 1 \). \[ E_3 = -\frac{13.6 \times 3^2}{1^2} = -\frac{13.6 \times 9}{1} = -122.4 \text{ eV} \] 4. **Calculate Energy for Beryllium Ion (Be\(^{3+}\))**: - For beryllium ion, \( Z = 4 \) and \( n = 1 \). \[ E_4 = -\frac{13.6 \times 4^2}{1^2} = -\frac{13.6 \times 16}{1} = -217.6 \text{ eV} \] ### Summary of Energies: - \( E_1 = -13.6 \text{ eV} \) (Hydrogen) - \( E_2 = -54.4 \text{ eV} \) (Helium ion) - \( E_3 = -122.4 \text{ eV} \) (Lithium ion) - \( E_4 = -217.6 \text{ eV} \) (Beryllium ion) ### Conclusion: The energies of the hydrogen, helium, lithium, and beryllium ions are not equal. Therefore, the correct relationship is that the energy increases in magnitude (becomes less negative) as we move from hydrogen to beryllium.

To solve the question regarding the correct relationship for the energy of hydrogen, helium, lithium, and beryllium ions, we will use the formula for the energy of an electron in a hydrogen-like atom: \[ E_n = -\frac{13.6 Z^2}{n^2} \text{ eV} \] where: - \( E_n \) is the energy of the electron, - \( Z \) is the atomic number, - \( n \) is the principal quantum number. ...
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ALLEN-ATOMIC STRUCTURE-Exercise - 01
  1. Bohr's theory is not applicable to-

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  2. What is likely to be principal quantum number for a circular orbit of ...

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  3. Which is the correct relationship-

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  4. If the value of E=-78.4 "kcal//mol", the order of the orbit in hydroge...

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  5. If velocity of an electron in 1st orbit of H atoms is V , what will b...

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  6. In a certain electronic transition in the hydrogen atoms from an init...

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  7. Match the following - {:((a),"Energy of ground state of" He^(+),(i)...

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  8. The energy of hydrogen atom in its ground state is -13.6 eV. The ener...

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  9. Total no of lines in Lyman series of H spectrum will be- (where n=n...

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  10. The spectrum of He is expected to be similar to.

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  11. What possibly can be the ratio of the de Broglie wavelength for two el...

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  12. The uncertainty in momentum of an electron is 1 xx 10^-5 kg - m//s. Th...

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  13. An alpha-"particle" is accelerated through a potential difference of V...

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  14. The orbital with zero orbital angular momentum is.

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  15. Which of the following is electronic configuration of Cu^(2+) (Z = 29)...

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  16. The electronic configuration of the Mn^(4+) ion is -

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  17. Which of the following has the maximum number of unpaired d-electron?

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  18. The total spin resulting from a d^7 configuration is :

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  19. {:("Given",K,L,M,N,),(,2,8,11,2,):} The number of electrons present ...

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  20. The configuration is 1s^(2) 2s^(2) 2p^(5) 3s^(1) shows :

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