The wavelength and frequency of the least energetic line has to be calculated. The initial and the final electronic state the least energetic line in the Lyman series have to be identified. Concept introduction: Electronic transitions that take place in excited H atom is, Lyman series: electronic transitions take place to the n = 1 level and it is in ultraviolet region. Balmer series: electronic transitions take place from n > 2 to the n = 2 level and it is in visible region. Ritz-Paschen series: electronic transitions take place from n > 3 to the n = 3 level and it is in infrared region. Brackett series: electronic transitions take place from n > 4 to the n = 4 level. Pfund series: electronic transitions take place from n > 5 to the n = 5 level Electromagnetic radiations are a type of energy surrounding us. They are of different types like radio waves, IR, UV, X-ray etc. Visible radiation in the wavelength of 400 nm to 700 nm Planck’s equation, E = hν = hc λ where, E = energy h = Planck's constant ν = frequency The energy increases as the wavelength of the light decrease. Also the energy increases as the frequency of the light increases. The frequency of the light is inversely proportional to its wavelength. ν = c λ where, c = speed of light ν = frequency λ = wavelength

BuyFind

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640
BuyFind

Chemistry & Chemical Reactivity

9th Edition
John C. Kotz + 3 others
Publisher: Cengage Learning
ISBN: 9781133949640

Solutions

Chapter 6, Problem 16PS
Interpretation Introduction

Interpretation: The wavelength and frequency of the least energetic line has to be calculated. The initial and the final electronic state the least energetic line in the Lyman series have to be identified.

Concept introduction:

  • Electronic transitions that take place in excited H atom is,

    Lyman series: electronic transitions take place to the n=1 level and it is in ultraviolet region.

    Balmer series: electronic transitions take place from n>2 to the n=2 level and it is in visible region.

    Ritz-Paschen series: electronic transitions take place from n>3 to the n=3 level and it is in infrared region.

    Brackett series: electronic transitions take place from n>4 to the n=4 level.

    Pfund series: electronic transitions take place from n>5 to the n=5 level

  • Electromagnetic radiations are a type of energy surrounding us. They are of different types like radio waves, IR, UV, X-ray etc.
  • Visible radiation in the wavelength of 400nm to 700nm
  • Planck’s equation,

    E==hcλwhere, E=energyh=Planck'sconstantν=frequency

The energy increases as the wavelength of the light decrease. Also the energy increases as the frequency of the light increases.

  • The frequency of the light is inversely proportional to its wavelength.

  ν=cλwhere, c=speedoflightν=frequencyλ=wavelength

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