Quantum Mechanical Model

All of the following statements about classical mechanics are true except one.

• all objects move with wave-like motion
• objects gain or lose energy in any amount
• the materials demonstrate wave-particle duality
• size and mass of objects obscures any quantum effects

Tags

NGSS.HS-PS4-3

The de Broglie wave equation showed that the wavelength of any moving object is equal to

• m/hν
• h/mv
• v/mh
• hm/v

Tags

NGSS.HS-PS4-1

The Heisenberg Uncertainty Principle states

• velocity and position cannot be determined at the same time
• a beam of light can interfere with the path and speed of an electron
• photons do not affect the position of an electron
• the velocity of a car cannot accurately be measured by a radar beam

An electron cloud

• represents a 50% probability of finding an electron
• has uniform density
• can be called an orbital
• can only show where the electron is not located

The quantum numbers describe all the characteristics of an electron except

• orbital shape
• velocity 
• energy level
• magnetic spin

If the first and second energy levels of an atom are full, then what would be the total number of electrons in the atom?

• 6

• 8

• 10

• 18

Tags

NGSS.HS-PS1-1

The n quantum number gives information about

• Size and Energy of the energy level
• orientation of the orbital
• spin of the electron
• shape of the orbital

Which of the following sub-levels is correctly designated?

• 1p⁵

• 3f⁹

• 2p⁶

• 3d¹¹

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How many orbitals are present in the 4p sub level?

• 7

• 5

• 4

• 3

Tags

NGSS.HS-PS1-1

Each sub level has its maximum number of orbitals. How many orbitals are in the third principal energy level?

• 3

• 6

• 9

• 12