Electron Configuration Review

The element with electron configuration 1s² 2s² 2p⁶ 3s² 3p² is:

• Si (Z = 14)

• Mg (Z = 12)

• C (Z = 6)

• S (Z = 16)

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The specific wavelengths of light seen through a prism that are made when high-voltage current is passed through a tube of hydrogen gas at low pressure is a:

• electron configuration.

• continuous electromagnetic spectrum.

• photoelectric effect.

• line-emission spectrum.

The energy of a photon is related to its

• frequency.

• speed.

• size.

• mass.

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For the f sublevel, the number of orbitals is

• A. 5.

• B. 18.

• C. 9.

• D. 7.

What is the wavelength of microwaves of 3.0 × 10^9 Hz frequency?

• 0.050 m

• 0.060 m

• 0.20 m

• 0.10 m

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An electron for which n = 4 has more (a)   than an electron for which n = 2.

• particle nature

• wave nature

• spin

• energy

What is the frequency of a photon with an energy of 1.99 × 10^-19 J? (h = 6.63 × 10^-34 J·s)

• 4.00 × 10^14 Hz

• 1.00 × 10^14 Hz

• 3.00 × 10^14 Hz

• 2.00 × 10^14 Hz

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The number of sublevels within each energy level of an atom is equal to the value of the

• principal quantum number.

• magnetic quantum number.

• angular momentum quantum number.

• spin quantum number.

What is the frequency of infrared light of 1.0 × 10⁻⁴ m wavelength?

• 3.0 × 10² Hz

• 3.0 × 10⁻¹³ Hz

• 3.0 × 10¹² Hz

• 3.0 × 10⁴ Hz

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The main energy levels of an atom are indicated by the

• orbital quantum numbers.

• principal quantum numbers.

• spin quantum numbers.

• magnetic quantum numbers.