One of the lines in the spectrum of atomic hydrogen has a wavelength of 1875.6 nm. What is the frequency of this line?

1.599x10¹⁴ s^-1

short wavelength = __________ frequency

long wavelength = ___________ frequency

short wavelength = high frequency

long wavelength = low frequency

compare the properties of the blue end of the visible spectrum with the red end of the visible spectrum. the blue end:

a) is higher in energy than the red end

b) has a lower frequency than the red end

c) has a longer wavelength than the red end

d) all of the above

e) none of the above

according to the experiments concerned with the photoelectric effect, what was the relationship between the frequency of the light striking the metal surface and the number of electrons emitted?

a) the lower the frequency the greater the number of electrons emitted

b) the higher the frequency the greater the number of electrons emitted.

c) below a certain frequency, no electrons were emitted.

d) there was no relationship between the frequency and the number of electrons.

e) only visible light causes the emission of an electron.

- for any atom with a full shell

- any atom with a full subshell (group 2 transition metals)

- anything with a half-full subshell

the m_l quantum number for an electron in the 5f orbital

which of the following is associated with the value of the l quantum number?

a) orbital size

b) orbital orientation

c) orbital shape

d) orbital energy

e) orbital uncertainty

which of the following transitions in the hydrogen spectrum will radiate the highest frequency?

a) 3 --> 1

b) 2 --> 1

c) 3 --> 2

d) 4--> 2

what was incorrect about the Bohr model of the atom?

a) his theory placed the elctron in definite locations within the atom.

b) his equation failed to reproduce the lines of the hydrogen atom

c) his theory incorrectly stated that th energies of electrons in an atom are quantized

d) his theory did not explain why the atom does not collapse due to attraction between the nucleus and the electron

a) his theory placed the elctron in definite locations within the atom.

noble gasses are very stable because:

a) they have the maximum proton/electron ratio

b)they have high electron affinities

c) their effective nuclear charge is very high

d) they have large atomic radii

e) they are pure covalent

the first ionization energy of an atom (symbol M) is described by the equation
a) M(g) + energy --> M⁺(g) + e^-

b)  M(g) -->  M⁺(g) + e^- + energy

c) M(g) + e- + energy --> M+(g)

d) M(g) + e- --> M+(g) + energy

e) M₂ + energy --> 2M(g)

which of the following CANNOT exhibit resonance?

a) SO₂

b) O₃

c) CH₂O

d) NO₂^-

e) C₆H₆ (benzene)

which of the following salts is expected to have the highest melting point?

a) NaF

b) NaCl

c) NaI

d) KBr

e) KF

in quantum mechanics, we cannot determine the exact position of a particle, only the probability of it being located in a certain region of space. this probability can be solved for using:

a) Planck's equation

b) Einstein's equation

c) de Broglie's equation

d) Schrodinger's equation

e) Heisenberg's equation

which orbital is the lowest in energy?

a) 3s

b) 3p

c) 3d

d) 2d

an element that has the same valence electron configuration as Te is

a) Sb

b) P

c) S

d) Bi

e) Br

which of the following atoms in ground state is diamagnetic?

a) F

b) N

c) Ne

d) B

e) O

f) Si

which element is in the f block?

a) Sc (21)

b) Sr (38)

c) Cd (48)

d) Nd (60)

e) Po (84)

which of the following has the highest ionization energy for the removal of the THIRD electron?

a) Ar

b) Cl

c) Si

d) Al

e) Mg

the outermost electrons in Ne are shielded most by electrons in

a) 1s

b) 2s

c) 2p

d) 3s

a) 1s

- same shell, lower subshell shields a little, but lower shell shields a LOT

no two electrons in the same ato can have the same set of four quantum numbers. this is:

a) dalton's theory

b) the aufbau principle

c) hund's rule

d) the pauli exclusion principle

e) the heisenberg uncertainty principle

what is the electron configuration of the iron(III) ion?

[Ar]3d⁵

- it's NOT 4s²3d³ -- because there's an alternative way that fills half a shell. lesson: always do this one electron at a time!

which of the following atoms or ions is NOT diamagnetic?

a) Ca

b) Na⁺

c) Cl^-

d) Cd

e) Al

As we move across the periodic table from left to right, atoms become smaller due to 

a) shell size increases

b) the p orbitals being filled

c) increasing effective nuclear charge

d) electron-electron repulsions

e) none of these

which element has the lowest first ionization energy?

a) At

b) F

c) Br

d) I

e) Cl

the _________ bonds there are between atoms of the same two elements, the ________ the bond length and the ________ the bond

[more/fewer][greater/shorter][stronger/weaker]

which of the following cannot exhibit resonance?

a) SO₂

b) O₃

c) CH₂O

d) NO₂^-

e) C₆H₆

H = 0

P = +1

how many lone pairs of electrons are there on the S atom in the SCl₄ molecule?

a) four

b) one

c) zero

d) three

e) two

in which of the following species is the octet rule violate by the central atom when formal charge is minimized?

a) H₂S

b) SO₄^2-

c) CCl₄

d) F₂NNF₂

e) PF₃

when the best Lewis structure is drawn for CH₃COOH, what are the bond orders for each of the C-O bonds?

a) 1,1

b) 1,2

c) 2,2

d) 1.33

e) 1.5

which of the following molecules is polar?

a) BeCl₂

b) CO₂

c) SO₂

d) I₃^-

e) CCl₄

consider the BeCl₂ molecule. Which statement about this molecule is false?

a) the molecule is polar

b) the molecule is linear

c) Be does not satisfy the octet rule

d) the molecule has polar bonds

a) the molecule is polar

- the molecule is actually NONPOLAR

which one of the following molecules is polar?

a) BCl₃

b) BF₄^-

c) CF₄

d) CH₂F₂

e) CO₂

a nitrogen atom is the central atom in laughing gas N₂O, which has the following characteristics

a) linear, polar

b) bent, nonpolar

c) bent, polar

d) linear, nonpolar

e) trigonal planar, nonpolar

all of the following molecules are polar except:

a) ClF₃

b) PF₃

c) BF₃

d) H₂CF₂

e) IF

which of the following molecules has the longest bond?

a) F₂

b) Cl₂

c) Br₂

d) I₂

all of the following are linear except:

a) NNO

b) NO₂⁺

c) CS₂

d) OCN^-

e) O₃

H-P-H bond angle in PH₃ is

a) 90

b) 107.5

c) 109.5

d) 120

e) 180

the smaller the difference in electronegativity between two atoms

a) the more ionic the bond

b) the more pure covalent the bond

c) the more polar covalent the bond

d) the higher the bond order

e) the greater the formal charge of the atoms