Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 47

MEDIUM

11th Telangana Board

IMPORTANT

Earn 100

Explain the difference between emission and absorption spectra.

Important Questions on Atomic Structure

MEDIUM

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 48

The quantum numbers of electrons are given below. Arrange them in order of increasing energies.
(a)

n = 4, l = 2, m_{l} = - 2, m_{s} = + 1 / 2

(b)

n = 3, l = 2, m_{l} = - 1, m_{s} = - 1 / 2

(c)

n = 4, l = 1, m_{l} = 0, m_{s} = + 1 / 2

(d)

n = 3, l = 1, m_{l} = - 1, m_{s} = - 1 / 2

HARD

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 49

The work function for Caesium atom is

1.9 eV

. Calculate the threshold frequency of the radiation. If the Caesium element is irradiated with a wavelength of

500 nm

, calculate the kinetic energy of the ejected photoelectron?

HARD

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 50

Calculate the wavelength for the emission transition if it starts from the orbit having radius

1.3225 nm

and ends at

211.6 pm

. Name the series to which this transition belongs and the region of the spectrum.

HARD

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 51

Explain the difference between orbit and orbital.

MEDIUM

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 52

Explain photoelectric effect.

MEDIUM

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 53

Explain Rutherford's nuclear model of an atom. What are its drawbacks?

MEDIUM

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 54

Explain briefly the Planck's quantum theory.

HARD

11th Telangana Board

IMPORTANT

Intermediate First Year Chemistry>Chapter 1 - Atomic Structure>QUESTIONS>Q 55

What are the postulates of Bohr's model of hydrogen atom? Discuss the importance this model to explain various series of line spectra in hydrogen atom.