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the ionization energy of Li^(++) is equa...

the ionization energy of `Li^(++)` is equal to

A

9 hcR

B

6 hcR

C

2hcR

D

hcR

Text Solution

Verified by Experts

The correct Answer is:
A
Ionisation energy`=RchZ^(2)`
`Z=3` for `Li^(2+)`
`therefore`Ionisation energy`=(3)^(2)Rch=9Rch`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-ATOMS, MOLECULES AND NUCLEI -Exercise 1 (TOPICAL PROBLEMS)
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  2. If the energy of a hydrogen atom in nth orbit is E(n), then energy in ...

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  3. the ionization energy of Li^(++) is equal to

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  7. Compare the radii of the nuclei of mass numbers 27 and 64.

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  8. The wavelength of K(alpha) line in copper is 1.54 Å. The ionisation en...

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  9. In Raman effect, Stokes' lines are spectral lines having

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  11. A hydrogen-like atom emits rediationof frequency 2.7 xx 10^(15) Hz whe...

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  12. Taking the Bohr radius a(0) = 53 pm, the radius of Li^(++) ion in its ...

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  14. When two different materials A and B having atomic number Z(1) and Z(2...

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  16. A beam of 350 keV electrons a molybdenum target, generating the X-rays...

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  17. An X-rays of wavelength 0.140 nm are scattered from a block of carbon....

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  18. X-ray of wavelength lamda=2 Å is emitted from the metal target. The po...

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  19. If a source of power 4 kW produces 10^(20) photons//second, the radiat...

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  20. A nucleus splits into two nuclear parts having radii in the ratio 1:2 ...

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