Chemistry 8.2: Spectra

8.2.1 - Spectra
By Mrs. Ojerio

Multiple Choice

Which type of radiation has the SHORTEST wavelength?

• Radio waves

• Ultraviolet Rays

• Gamma Rays

• X-rays

Multiple Choice

True or False: The ground state is the highest energy state of an atom.

• True

• False

Multiple Choice

The line emission spectrum shown happens when

• Electrons transition from lower to higher energy levels.

• Electrons transition from higher to lower energy levels.

• Electrons exist in fixed energy states.

Fill in the Blank

An electron in a hydrogen atom loses $$4.088\ x\ 10^{-19}\ J$$  of energy. What is the wavelength of this line?

$$h\ =\ 6.626\ x\ 10^{-34}\ J$$   $$c\ =\ 3.00\ x\ 10^8\ \frac{m}{s}$$  

Fill in the Blank

One of the lines in the hydrogen emission spectrum has the wavelength 434 nm $$\left(4.34\ x\ 10^{-7}\ m\right)$$  . What is the energy transition that produces this light?

$$h\ =\ 6.626\ x\ 10^{-34}\ J$$   $$c\ =\ 3.00\ x\ 10^8\ \frac{m}{s}$$  

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