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Avogadro's number is 6.023xx 10 ^(-23) ...

Avogadro's number is `6.023xx 10 ^(-23)` .

A

`6.023xx10^(23)`

B

`6.025xx10^(25)`

C

`6.024xx10^(24)`

D

`6.022xx10^(22)`

Text Solution

Verified by Experts

The correct Answer is:
A
`N_(A)=6.023xx10^(23)`
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The ionization energy of hydrogen atom in the ground state is 1312 kJ "mol"^(-1) . Calculate the wavelength of radiation emitted when the electron in hydrogen atom makes a transition from n = 2 state to n = 1 state (Planck’s constant, h = 6.626 xx 10^(-34) Js , velocity of light, c = 3 xx 10^8 m s^(-1) , Avogadro’s constant, N_A = 6.0237 xx 10^23 "mol"^(-1) ).