Answer Key:
A
Feedback:
Good. See section 10.6
Question 10 of 12
4.0/ 4.0 Points
`Geometrically tetrahedral means that the electron groups have what angle?
T
O
M
C
O
2

j
j
j
S
A.120°
B.180°
C.90°
D.109.5°
E.not enough information
Answer Key:
D
Feedback:
Good. See section 10.7
Part 3 of 3 -
7.5/ 10.0 Points
Question 11 of 12
2.5/ 5.0 Points
`On December 5, 1971, at the mere age of 35, the great composer Wolfgang Amadeus Mozart died after a three month long battle
with illness. Rumor was that a rival musician had poisoned him, but it turned out that common consensus was that the antimony
prescription that doctors had prescribed him was actually poisoning him.
(a) What is the full
and
abbreviated electron con±guration for this element? Explain how you arrived at this con±guration. In other
words, don't just give me the con±guration, but walk me through and explain to me how exactly you arrived at your answer.
(b) In this Lesson we talked about the relationship between frequency and wavelength. The relationship can actually be expressed as
where
f
is the frequency,
c
is the speed of light (see below), and
lambda
(the symbol on the left of the equals sign that looks like an
upside down y) is wavelength. The particle nature of light was ±rst proposed by Einstein, who suggested that light could be
described as a stream of particles called photons. A photon of a certain wavelength (
lambda
) has an energy (
E
) given by the equation:
where
E
is the energy of the photon in J,
h
is Planck's constant (6.626 x 10
-34
J*s), and
c
is the speed of light (3.00 x 10
8
m/s). If we
determine the wavelength (
lambda
) of light emitted from a sample of antimony to be 206.8 nm, what is the energy (E) and frequency
(f) that corresponds to this wavelength?