Atoms and Nuclei Test

Result

Atoms and Nuclei Test - 42

Score
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Weekly Quiz Competition

Question 1
4 / -1

An ionic atom equivalent to hydrogen atom has wavelength equal to 1/4 of the wavelengths of hydrogen lines. The ion will be

A
He⁺

B
Li⁺⁺

C
Ne⁹⁺

D
Na¹⁰⁺

Solution
Question 2
4 / -1

A

B

C

D

Solution
Question 3
4 / -1

Hydrogen atom emits blue light when it changes from n = 4 energy level to the n = 2 level. Which colour of light would the atom emit when it changes from the n = 5 level to the n = 2 level?

A
Red

B
Yellow

C
Green

D
Violet
Question 4
4 / -1

A
n = 4

B
n = 2

C
n = 16

D
n = 3

Solution
Question 5
4 / -1

The splitting of line into groups under the effect of magnetic field is called

A
Zeeman's effect

B
Bohr's effect

C
Heisenberg's effect

D
Magnetic effect
Question 6
4 / -1

The first line of Balmer series has wavelength 6563 Å. What will be the wavelength of the first member of Lyman series?

A
1215.4 Å

B
2500 Å

C
7500 Å

D
600 Å

Solution
Question 7
4 / -1

The wavelength of Lyman series isis

A

B

C

D

Solution
Question 8
4 / -1

When hydrogen atom is in its first excited level, its radius is ...its ground state radius

A
Half

B
Same

C
Twice

D
Four times

Solution
Question 9
4 / -1

Hydrogen atom excites energy level from fundamental state to n = 3. Number of spectrum lines according to Bohr, is

A
4

B
3

C
1

D
2

Solution
Question 10
4 / -1

Number of spectral lines in hydrogen atom is

A
3

B
6

C
15

D
Infinite