Structure of Atom Test

Result

Structure of Atom Test - 25

Score
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Rank
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TIME Taken - -

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following ions has the maximum magnetic moment?

A
Mn²⁺

B
Fe²⁺

C
Ti²⁺

D
Cr²⁺

Solution
Question 2
4 / -1

The number of d-electrons retained in Fe²⁺ (At. No. of Fe = 26) ion is

A
4

B
5

C
6

D
3

Solution
Question 3
4 / -1

In Bohr series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of the following inter–orbit jumps of the electron for Bohr orbits in an atom of hydrogen?

A
5 → 2

B
4 → 1

C
2 → 5

D
3 → 2
Question 4
4 / -1

The value of the energy for the first excited state of hydrogen atom will be

A
–13.6 eV

B
–3.40 eV

C
–1.51 eV

D
–0.85 eV

Solution
Question 5
4 / -1

In a hydrogen atom, if the energy of an electron in the ground state is 13.6 eV, then that in the 2nd excited state is

A
–1.51 eV

B
3.4 eV

C
6.04 eV

D
13.6 eV

Solution
Question 6
4 / -1

The wavelength associated with a golf ball weighing 200 g and moving at a speed of 5 m/h is of the order

A

B

C

D

Solution
Question 7
4 / -1

The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 metres per second is approximately

A
10^–31 metres

B
10^–16 metres

C
10^–25 metres

D
10^–33 metres

Solution
Question 8
4 / -1

The number of d-electrons in Fe²⁺ (Z = 26) is not equal to that of the

A
p electrons in Ne (at. no. = 10)

B
s – electrons in Mg (at. no. = 12)

C
d – electrons in Fe

D
p – electrons in Cl − (at. no. of Cl = 17)

Solution
Question 9
4 / -1

If n and l are respectively the principal and azimuthal quantum numbers, then the expression for the calculation of the total no. of electrons in any energy level is

A

B

C

D

Solution
Question 10
4 / -1

The number of photons of light having wave number x in 1J of energy source is (Planck’s constant = h, velocity of light = c)

A
hcx

B
hc/x

C

D

Solution