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ATOMIC SPECTRA

Authored by BINITHA MP

Physics

University

15 Questions

Used 132+ times

ATOMIC SPECTRA
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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Read the following statements:


I. It explains the origin of the emission spectrum for Hydrogen only.

II. It is impossible to know both the position and the momentum of the electron

III. It does not specify the position of the electron in the atom.


What options correspond to deficiencies of the Bohr's atomic model?

I and II

I and III

II and III

I, II and III

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Read the following statements:

I. Thermal energy
II. Electromagnetic radiation
III. High voltage sources

What energy sources can be used in order to obtain the emission line spectrum of an element?

I and II

II and III

I and III

I, II and III

3.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Media Image

the diagram show

the formation of continous spectrum

the formation of line spectrum

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The energy of second Bohr orbit of the hydrogen atom is −328kJ /mol. Hence, the energy of fourth Bohr orbit in kJ/mole would be:

-41

-1312

-164

-82

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

When an electron moves from n=4 to n=1, what wavelength of energy is emitted?

97 nm

410 nm

434 nm

1282 nm

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The line with the shortest wavelength is produced in the hydrogen spectrum when electron moves

from n=2 to n=1

rom n=4 to n=1

from n=3 to n=1

from n=4 to n=3

7.

MULTIPLE SELECT QUESTION

20 sec • 1 pt

State whether true or false.

Every element has its own unique atomic spectra.

True

False

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