Exam 4

Calculate the frequency of the red light emitted by a neon sign with a wavelength of 680 nm.

4.41 × 1014 s-1

Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of 6.19 × 1014 Hz.

485 nm

How much energy (in kJ) do 3.0 moles of photons, all with a wavelength of 670 nm, contain?

536 kJ

In which orbital below would an electron (on average) be furthest from the nucleus?

5d

Give the number of valence electrons for Te.

6

Determine the shortest frequency of light required to remove an electron from a sample of Ti metal if the binding energy of titanium is 3.14 × 103 kJ/mol.

7.87 × 1015 Hz

Electromagnetic radiation with a wavelength of 745 nm appears as red light to the human eye. The energy of one photon of this light is ________ J.

2.67 × 10-19

Determine the end (final) value of n in a hydrogen atom transition, if the electron starts in n = 1 and the atom absorbs a photon of light with an energy of 1.938 × 10-18

3

How many of the following elements have 1 unpaired electron in the ground state? BAlSeCl

3

Of the following, which atom has the smallest atomic radius?

F

Identify the element that has a ground state electronic configuration of [Ar]4s23d104p6.

Kr

Place the following in order of increasing radius. I-Mg2+K+

Mg2+ < K+ < I-

Identify the elements correctly shown by decreasing radii size.

N3- > N

What period 3 element has the following ionization energies (all in kJ/mol)? IE1 = 1012IE2 = 1900IE3 = 2910IE4 = 4960IE5 = 6270IE6 = 22,200

P

No two electrons can have the same four quantum numbers is known as (the)

Pauli exclusion principle.

Which reaction below represents the electron affinity of S?

S(g) + e- → S-(g)

Place the following in order of decreasing metallic character. SiSPCl

Si > P > S > Cl

Choose the diamagnetic species from below.

Sn2+

Which ion does NOT have a noble gas configuration in its ground state?

Sn2+

Which of the following occurs as the wavelength of a photon increases?

The frequency decreases.

Choose the statement that is TRUE.

Valence electrons are most difficult of all electrons to remove.

Give the ground state electron configuration for Rb+.

[Kr]5s1

Give the ground state electron configuration for Te.

[Kr]5s24d105p4

The condensed electron configuration of magnesium, element 12, is ________.

[Ne]3s2

Which of the following represents the change in electronic configuration that is associated with the first ionization of magnesium?

[Ne]3s2 → [Ne]3s1 + e-

The element that corresponds to the electron configuration 1s22s22p63s23p64s13d5 is

chromium.

Which of the following transitions (in a hydrogen atom) represent absorption of the smallest frequency photon?

n = 5 to n = 6

Each of the following sets of quantum numbers is supposed to specify an orbital. Choose the one set of quantum numbers that does NOT contain an error.

n = 5, l = 3, ml = -3

Which of the following quantum numbers describes the size and energy of an orbital?

principal quantum number

Place the following types of electromagnetic radiation in order of decreasing frequency. x-rays radio waves gamma rays

radio waves < x-rays < gamma rays

Of the following, which element has the lowest first ionization energy?

sodium

Give the numbers for ml for an f orbital.

-3, -2, -1, 0, +1, +2, +3

Give all possible values of l if n = 3.

0, 1, 2

Calculate the wavelength of an electron (m = 9.11 × 10-28 g) moving at 3.66 × 106 m/s.

1.99 × 10-10 m

Give the ground state electron configuration for F-.

1s22s22p6

Give the complete electronic configuration for Mn.

1s22s22p63s23p64s23d5

Give the complete electronic configuration for oxygen.

1s22s22px22py12pz1

What value of l is represented by a d orbital?

2

Calculate the energy of the red light emitted by a neon atom with a wavelength of 850 nm

2.34 × 10-19 J

Electrons filling up the orbitals from low to high is known as (the)

Aufbau principle.

Identify the most reactive alkali metal with water.

Cs

Place the following elements in order of decreasing atomic radius. XeCsNe

Cs > Xe > Ne

Describe the shape of a 3dxy orbital.

four balls

If two electrons in the same atom have the same value of l, they are

in the same sublevel, but not necessarily in the same level.

Give the set of four quantum numbers that represent the last electron added (using the Aufbau principle) to the Zn atom.

n = 3, l = 2, ml = 2, ms = +1/2

Give the set of four quantum numbers that could represent the electron gained to form the Br ION from the Br atom.

n = 4, l = 1, ml = 1, ms = -1/2