Electronic Structure of Atoms and Periodic Trends

Which part of the wave is labeled as 'trough' in the diagram?

• The highest point

• The lowest point

• The middle point

• The starting point.

The bending of different colors of light at different angles is known as _______.

• A) Reflection

• B) Refraction

• C) Dispersion

• D) Diffraction

What is the effect of a prism on white light?

• It absorbs it

• It reflects it

• It disperses it into a spectrum

• It transmits it unchanged.

Fill in the blank: The electromagnetic wave with the shortest wavelength is _______.

• A) Radio waves

• B) X-rays

• C) Gamma rays

• D) Ultraviolet

Each element has its own unique ______.

• Atomic mass

• Atomic spectra

• Number of electrons

• Chemical symbol

When electrons lose energy, what is emitted?

• Neutrons

• Protons

• Photons

• Electrons

Which of the following statements is true?

• Electrons emit energy when they move to a higher energy level.

• Electrons absorb energy when they move to a higher energy level.

• Electrons remain in the same energy level when they absorb energy.

• Electrons lose energy when they move to a higher energy level.

What is the result of electrons absorbing energy?

• Emission of high-energy photons

• Movement to a higher energy level

• Emission of low-energy photons

• Movement to a lower energy level

What must the spins of electrons in an orbital be?

• Identical

• Opposite

• Random

• None

What is the number of sublevels for the energy level n=1?

• 1

• 2

• 3

• 4