HOME –WORK EXTRA
Problem #1. Complete and balance the following equations by supplying the missing particles or energy
ray. Identify the type of radioactive decay for each reaction.
224
220
Ra 
a)
88
232
Rn + _____
90
222
Ra 
b)
86
4
Rn + He + _____
88
232
Th 
c)
226
13
Pa + _____
d) N
91
7
86
2
13
 C + _____
6
Problem #2. Write nuclear equations for the following process:
a) krypton-81 undergoes beta decay
c) electron capture of lead-206
b) alpha decay of uranium-238
d) thorium-230 undergoes alpha emission
Problem #3. What is the original mass of C-14 in a sample if 10.00 mg of it remains after 20,000 years? The
half- life of C-14 is 5730 years.
Problem #4. Determine the mode of decay of the following.
a) Carbon-14
d) Indium-120
b) Xenon-118
c) Plutonium-239
e) He-4
f) Ca-40
Problem #5. Which class of functional group the followings belong to?
O
O


(a) R OH _________ (b) R CHO _________ (c) R C - H _________ (d) R C  OH ________
(e) R CO R _________ ( f) R NH2 _________ ( g) R O  R _________(i) R COO  R _________
Problem #6. Write the IUPAC name for each of the following structure.
CH3
(a) CH3 - CH - CH2 - CH - CH2 - CH3
CH3
(d)
(b) CH2 - CH2 - CH - C (CH3)2 - CH3
CH3
C -H
CH3
CH3 - CH - CH2 - CH3
CH3 - CH2 - CH - CH3
(e)
CH3 - CH - CH2 - C = CH2
Br
CH3
CH3
CH3
Br
(g)
(c) H - C
(h)
CH3
Cl
CH3
(f)
CH3 - CH2 - CH = CH - CH3