Reference no: EM131956405

1. What is the frequency of a 670 nm light wave?

a) 4.5 x 10⁶ s^-1

b) 2.2 x 10⁶ s^-1

c) 2.2 x 10¹⁴ s^-1

d) 4.5 x 10¹⁴ s^-1

2. The light emission spectrum for an element in discontinuous because:

a) only a few energies of light are produced by the electrons of an atom returning to ground state

b) not all energies emitted have wavelengths

c) not all atoms contain electrons that can be excited

d) all wavelengths of emission spectra combine to form white light

3. The ground state electron configuration of every atom has at least one electron in the:

a) 1s atomic orbital

b) 2s subshell

c) 1p subshell

d) 0s atomic orbital

4. For every element, the ground state electron configuration has at least one electron in the 2s orbital.

True

False

5. Which of the following choices is more related to quantum mechanics than to classical mechanics?

a) the motion of the planets and stars

b) the motion of fluids

c) the motion, structure and reactions of atomic nuclei

d) the effect of gravitational forces

6. Quantum mechanics were designed because:

a) classical mechanics were proven false for both macroscopic and subatomic systems

b) classical mechanics were proven unreliable for multi-electron subatomic systems

c) classical mechanics were considered slower and old-fashioned

d) new theories were needed to prove that scientists were making new discovering

7. Planck's constant relates the energy in one photon of electromagnetic radiation to the wavelength of the radiation

a) Directly

b) Inversely 

c) Indirectly 

d) Random