Introduction to Quantum Mechanics

All of the orbitals in a given subshell (energy sublevel) have the same value of the __________ quantum number. A) azimuthal B) magnetic C) principal D) A and B E) B and C

How many of the following statements are false?I. The principal quantum number n is related to the size of an orbital.II. s, p, d, f  represent orbitals with different azimuthal quantum numbers.III. The magnetic quantum number can have values of +½ or -½.IV. The spin quantum number is related to the orientation of an orbital.V. The electron density at a point is proportional to Ψ 2 at that point.A. 0B. 1C. 2D. 3E. 4

 Which of the following statements are  true?a. We can sometimes know the exact location and speed of an electron at the same timeb. All orbitals in a given atom are roughly the same sizec. Since electrons have mass, we must always consider them to have particles properties and never wavelike propertiesd. The magnetic quantum number (ml) describes the orientation of the orbitale. All of the above

Atomic orbitals developed using quantum mechanicsA) describe regions of space in which one is most likely to find an electron.B) describe exact paths for electron motion.C) give a description of the atomic structure which is essentially the same as the Bohr model.D) allow scientists to calculate an exact volume for the hydrogen atom.E) are in conflict with the Heisenberg Uncertainty Principle.

The quantum number ______ defines the ________________ of an orbital. Choose which is correct.a. n defines the size of the orbitalb. ms defines the spin of the electronc. l defines the shape of the orbitald. ml defines the orientation in space of the orbitale. all the above are correct.

Which of the following quantum numbers describes the shape of an orbital?a. principal quantum numberb. Schrodinger quantum numberc. spin quantum numberd. angular momentum quantum numbere. magnetic quantum number

What does the magnetic quantum number determine?a. the energy of an orbitalb. the overall size of an atomc. the shape of the orbital .d. the energy of the electron on the outer shelle. the orientation of the orbitalf. the possible number of electrons on particular orbitalg. the overall size of an orbital

Answer each of the following questions.a) What information is needed to determine the energy of an electron in a many-electron atom? Check all that apply.b) What information is most important in determining the size of an orbital? c) What information is needed to determine the orientation of an orbital? d) What information is needed to determine the general shape of an orbital? 

What does the magnetic quantum number determine? Check all that apply.a) the shape of the orbitalb) the overall size of an orbitalc) the energy of the electron on the outer shelld) the possible number of electrons on particular orbitale) the energy of an orbitalf) the orientation of the orbitalg) the overall size of an atom