Worksheet: Atomic Emission Spectra

In this worksheet, we will practice interpreting atomic emission spectra to identify elements and determine the compositions of unknown materials.

Q1:

An emission spectrum is produced by passing the light from a red neon lamp through a prism. In which region of the spectrum are the most intense spectral lines likely to occur?

  • A400 nm to 450 nm
  • B600 nm to 650 nm
  • C450 nm to 500 nm
  • D500 nm to 550 nm
  • E550 nm to 600 nm

Q2:

An emission spectrum is produced by passing the light from a blue argon lamp through a prism. In which region of the spectrum are the most intense spectral lines likely to occur?

  • A400 nm to 450 nm
  • B600 nm to 650 nm
  • C500 nm to 550 nm
  • D550 nm to 600 nm
  • E450 nm to 500 nm

Q3:

Lithium salts appear red in a flame test. In which region of the spectrum are the most intense spectral lines likely to occur?

  • A 600 nm to 650 nm
  • B 550 nm to 600 nm
  • C 450 nm to 500 nm
  • D 400 nm to 450 nm
  • E 500 nm to 550 nm

Q4:

Molybdenum oxide appears green in a flame test. In which region of the spectrum are the most intense spectral lines likely to occur?

  • A450 nm to 500 nm
  • B400 nm to 450 nm
  • C600 nm to 650 nm
  • D500 nm to 550 nm
  • E550 nm to 600 nm

Q5:

An emission spectrum is produced by passing the light from a yellow sodium lamp through a prism. In which region of the spectrum are the most intense spectral lines likely to occur?

  • A600 nm to 650 nm
  • B500 nm to 550 nm
  • C550 nm to 600 nm
  • D400 nm to 450 nm
  • E450 nm to 500 nm

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