14. Question No. : (TCO 11) Thorium (Th), with a mass number of 224 & an atomic
number of 90, decays by emission of an alpha particle. Identify the
product of the nuclear reaction by providing its atomic symbol (2 pts),
mass number (2 pts), & atomic number (1 pt).
Student Ans: alpha decay, the nucleon number decreases by four & the atomic
number decreases by two. Thus, the product is Radiun (Ra) with a
mass number of 220 & an atomic number of 88.
Inst. Exp: Chapter 11, pg 296; in alpha decay, the nucleon number decreases
by four & the atomic number decreases by two. Thus, the product is
Radiun (Ra) with a mass number of 220 & an atomic number of 88.
1944908779 Short 7 False
0 1944908779 Short 7
1. Question No. : (TCO 9) Which of the following compounds is an alkyne?
Student Ans:
C3H6
CH3-CH2-CCH
H2C=CH-CH=CH2
CH3-CH2-CH3
2-pentene
Inst. Exp: Chapter 9
1941114273 MultipleChoice 3 True
0 1941114273 MultipleChoice 3
2. Question No. : (TCO 9) What is the name of this compound? CH3-CH2-CH2-CH2-
CH3?
number of 90, decays by emission of an alpha particle. Identify the
product of the nuclear reaction by providing its atomic symbol (2 pts),
mass number (2 pts), & atomic number (1 pt).
Student Ans: alpha decay, the nucleon number decreases by four & the atomic
number decreases by two. Thus, the product is Radiun (Ra) with a
mass number of 220 & an atomic number of 88.
Inst. Exp: Chapter 11, pg 296; in alpha decay, the nucleon number decreases
by four & the atomic number decreases by two. Thus, the product is
Radiun (Ra) with a mass number of 220 & an atomic number of 88.
1944908779 Short 7 False
0 1944908779 Short 7
1. Question No. : (TCO 9) Which of the following compounds is an alkyne?
Student Ans:
C3H6
CH3-CH2-CCH
H2C=CH-CH=CH2
CH3-CH2-CH3
2-pentene
Inst. Exp: Chapter 9
1941114273 MultipleChoice 3 True
0 1941114273 MultipleChoice 3
2. Question No. : (TCO 9) What is the name of this compound? CH3-CH2-CH2-CH2-
CH3?
