Chemistry, asked by faiezkhan4734, 6 months ago

Which of the following is not conserved during the mass scattering? Momentum kinetic energy electronic energy and Total energy

Answers

Answered by Anonymous
4

Questions from Atoms

1. The ground state energy of an atom is . The photon emitted during the transition of electron from to state, is incident on a photosensitive material of unknown work function. The photoelectrons are emitted from the materials with a maximum kinetic energy of . The threshold wavelength of the material used is

2. For scattering by an inverse-square field (such as that produced by a charged nucleus in Rutherford’s model) the relation between impact parameter b and the scattering angle 0 is given by,

The scattering angle for is

3. According to Bohr’s theory, the wave number of last line of Balmer series is

4. For scattering by an inverse-square field (such as that produced by a charged nucleus in Rutherford’s model) the relation between impact parameter b and the scattering angle 0 is given by,

The scattering angle for is, for if initial energy is the impact parameter (in ) of which the scattering angle is is

5. The first line of the Lyman series in a hydrogen spectrum has a wavelength of . The corresponding line of a hydrogen- like atom of is equal to

6. The inverse square law in electrostatics is for the force between an electron and a proton. The dependence of can be understood in quantum theory as being due to the fact that the ‘particle’ of light (photon) is massless. If photons had a mass , force would be modified to

where and The change in the ground state energy of a -atom if were times the mass of an electron. ( Bohr’s radius)

7. Assertion : Atoms of each element are stable and emit characteristic spectrum.

Reason : The spectrum provides useful information about the atomic structure.

8. What is the ratio of the shortest wavelength of the Balmer series to the shortest wavelength of the Lyman series ?

Answered by Anonymous
3

Answer:

As the charge of the ions increases, the lattice energy increases. as the size of the ions increases, the lattice energy decreases.

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