Answers to chapter 3 and 24 review worksheet
PAGE TWO
Symbol | No. of p+ | No. of n0 | Mass no. | No. of e- | Atomic no. |
12 C 6 | 6 | 6 | 12 | 6 | 6 |
11 B 5 | 5 | 6 | 11 | 5 | 5 |
9 Be 4 | 4 | 5 | 9 | 4 | 4 |
37 Cl 17 | 17 | 20 | 37 | 17 | 17 |
Name | Protons | Neutrons | Electrons | Mass Number |
Boron-11 | 5 | 6 | 5 | 11 |
Chromium-52 | 24 | 28 | 24 | 52 |
Sulfur-32 | 16 | 16 | 16 | 32 |
Tin-120 | 50 | 70 | 50 | 120 |
SKIP QUESTIONS: 1, a, and b
c. At # 27; 59-Mass #
d. Cr-53 protons-24 neutrons-29 electrons-24
PAGE THREE
- B
- D
- C
- B
- A
PAGE FOUR
1.
a. 39 days
b. protons-53 neutrons-73 electrons-53
2. 259.2 g
3. a. 227 4 223
Ac ¨ ƒ¿ + Fr
89 2 87
b. 14 0 14
C ¨ ƒÀ + N ()
6 -1 7
4. Fr is not stable because it is greater than 83 and N is stable
