Chem ch 5 review

31.) What are the three rules that govern the filling of atomic orbits by electrons?

1.) Electrons occupy the lowest possible energy levels. 2.) An atomic orbital can hold at most two electrons 3.) One electron occupies each of a set of orbitals with equal energies before any pairing of electrons occur.

39.) write electron configuration b. vanadium

1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d3

34.)a. electron configuration of Na

1s^2, 2s^2, 2p^6, 3p^1

37.) Arrange the following sub levels in order of increasing energy: 3d, 2s, 4s, 3p

2s, 3p, 4s, 3d

27.) How many orbitals are in the 2p sub level?

3

26.) What is an atomic orbital?

A region in space around the nucleus in which there is a high probability of finding and electron

29.) How many sub levels are contained in each of these principal energy levels? A.) n=1 B.) n=2 C.) n=3 D.) n=4

A.) 1 C.) 3 B.) 2 D.) 4

30.) How many electrons are in the highest occupied energy level of these atoms? A.) barium D.) oxygen

A.) 2 D.) 6

38.) How many electrons are in the second energy level of an atom of each element? A.) Chlorine

A.) 8

25.) What is the significance of the boundary of an electron cloud?

An electron is found 90% of the time inside this boundary

41.)What is meant by the frequency of a wave? what are the units of frequency? describe the relationship between frequency and wavelength.

Frequency is the number of wave cycles that pass a given point Frequency units are cycles or hertz. Wavelength and Frequency are inversely related

24.)Describe Rutherfords model of the atom and compare it with the model proposed by his student Niels Bohr.

Rutherfords- negatively charged electrons surround a dense, positively charged nucleus Bohrs- electrons are assigned to concentric circular orbits of fixed energy

33.) What is meant by 3P^3?

The "p" orbitals in the third quantum level have three electrons

47.) What happens when a hydrogen atom absorbs a quantum of energy?

The electron of the Hydrogen atom is raised (excited) to a higher energy level.

40.)List the colors of the visible spectrum in order of increasing wavelengths.

Violet, Indigo, Blue, Green, Yellow, Orange, Red

36.) max number of electrons that can go into each sublevel? a.2s b.3p d.3d g.4f

a. 4 b. 18 d. 30 g. 60

35.) whuch of these orbital designations are invalid? a. 4s b. 3f c. 2d d. 3d

c. 2d

49.) the transition of electrons from higher energy levels to the n=2 energy level results in the emission of light from hydrogen atoms. in what part of the spectrum is the emitted light, and what is the name given to this transition series?

excited state principal quantum state