Modern Model (Quantum Model) Question Preview (ID: 60489)

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Which energy-level change shown in the diagram below emits the highest energy?

a) an electron moving from E6 to E5

b) an electron moving from E2 to E4

c) an electron moving from E2 to E3

d) an electron moving from E2 to E1

According to Bohr, electrons cannot reside at ____ in the figure below.

a) point A

b) point B

c) point C

d) point D

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

a) principal quantum number.

b) angular momentum quantum number.

c) magnetic quantum number.

d) spin quantum number.

26. Each atomic orbital is described by its principal quantum number followed by the

a) value of the electron's spin state.

b) number of electrons in the sublevel.

c) magnetic quantum number.

d) letter of the sublevel.

The spin quantum number of an electron can be thought of as describing

a) the direction of electron spin.

b) whether the electron's charge is positive or negative.

c) the electron's exact location in orbit.

d) the number of revolutions the electron makes about the nucleus per second.

An electron for which n = 4 has more ____ than an electron for which n = 2.

a) spin

b) energy

c) particle nature

d) wave nature

The set of orbitals that are dumbbell shaped and directed along the x, y, and z axes are called

a) d orbitals.

b) f orbitals.

c) p orbitals.

d) s orbitals.

30. A spherical electron cloud surrounding an atomic nucleus would best represent

a) an s orbital.

b) a px orbital.

c) a combination of px and py orbitals.

d) a combination of an s and a px orbital.

The major difference between a 1s orbital and a 2s orbital is that

a) the 2s orbital can hold more electrons.

b) the 2s orbital has a slightly different shape.

c) the 2s orbital is at a higher energy level.

d) the 1s orbital can have only one electron.

An orbital that can never exist according to the quantum description of the atom is

a) 3d.

b) 6d.

c) 8s.

d) 3f.

34. The letter designations for the first four sublevels with the maximum number of electrons that can be accommodated in each sublevel are

a) s:2, p:4, d:6, and f:8.

b) s:1, p:3, d:5, and f:7.

c) s:2, p:6, d:10, and f:14.

d) s:1, p:2, d:3, and f:4.

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