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The binding energy of an electron in the...

The binding energy of an electron in the ground state of He is equal to 24.6eV. The energy required to remove both the electron is

A

`59 eV`0

B

`81 eV`

C

`79 eV`

D

`40 eV`

Text Solution

Verified by Experts

`He rarr He^(o+) + e IP_(1) = 24.6 eV`
`He^(o+) rarr He^(2+) + e IP_(2) =`?
` IP_(2) =13.6 eVxx Z^(2) = 13.6 eVxx Z^(2) = 54.4 eV`
` IP_(1) + IP_(2) = 24.6 + 54.4 = 79 eV`
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CENGAGE CHEMISTRY ENGLISH-ATOMIC STRUCTURE-Concept Applicationexercise(4.3)
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  2. How many quantum number are needed in designate an orbital ? Name the...

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  3. The principal quantum number of n of an atomic orbitals is 5 what are ...

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  4. (a) An atomic orbital has n=3. What are the possible values of l? (b...

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  5. What is the lowest value of n that allows g orbital to exist?

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  6. Given the notation for the sub-shell deotected by the following quant...

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  7. How many electron on a fully filled f sub-shell have m(1) = 0 ?

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  8. An electron is in one of the 3d orbitals. Give the possible values of ...

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  9. If the largest value ofm(1) for an electron is + 3 in what type of su...

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  10. Explain giving reasons, which of the following sets of quantum numbers...

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  11. How many electron in atom may have the following quantum number ? A n ...

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  12. How many orbitals are possible in a. 4th energy level b. 5f sub-she...

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  13. What are the possible values of l and m(1) for an atomic orbital 4f?

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  14. What is the shape of 1s and 2s orbital .Give two point of difference ...

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  15. (a) How many sub-shells are associated with n = 4? (b) How many electr...

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  16. How many spherical nodes are present in 4s orbital in a hydrogen ato...

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  17. The principal quantum number representwsw

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  18. The energy of an electron of 2p(1) orbital is

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  19. The orbital angular momentum of an electron of an electron in 2s orbit...

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  20. The number of angular nodal planes of zero electron density in the d(...

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