Given the following nuclear reaction:
224/88 Ra ----> 4/2 He + a/z X
Column A
1.
What is the atomic mass of the new atom?:
What is the atomic mass of the new atom?
2.
What is the atomic number of the new atom?:
What is the atomic number of the new atom?
3.
What is the symbol of the new atom?:
What is the symbol of the new atom?
4.
What type of decay is demonstrated here?:
What type of decay is demonstrated here?
Column B
a.Th
b.88
c.90
d.86
e.Beta Decay
f.224
g.Gamma Decay
h.Rn
i.Ra
j.220
k.Alpha Decay
l.84
m.228
1. The atomic mass of the new atom is 220.
2. The atomic number of the new atom is 86.
3. The symbol of the new atom is Rn.
4. The type of decay demonstrated here is Alpha Decay.
Column B:
a. Th
b. 88
c. 90
d. 86
e. Beta Decay
f. 224
g. Gamma Decay
h. Rn
i. Ra
j. 220
k. Alpha Decay
l. 84
m. 228
1. To determine the atomic mass of the new atom, add the atomic masses of the particles on the right side of the equation:
Atomic mass of 4/2 He: 4 amu
Atomic mass of a/z X: a amu
Therefore, the atomic mass of the new atom is 4 amu + a amu.
2. The atomic number of an atom is equal to the number of protons it contains. In this case, the atomic number of the new atom is equal to the atomic number of the left side atom (224/88 Ra), which is 88.
3. The symbol of the new atom is determined by its atomic number. Since the atomic number is 88, the symbol of the new atom is Rn.
4. The type of decay demonstrated here is alpha decay. Alpha decay is characterized by the emission of an alpha particle (4/2 He).
Matching the answers with the options provided in Column B:
1. l. 84
2. b. 88
3. h. Rn
4. k. Alpha Decay
1. To determine the atomic mass of the new atom, you need to consider the mass numbers of the particles involved in the nuclear reaction. In this case, the mass number of the original atom is 224, and the mass number of the helium (He) particle is 4. Therefore, the mass number of the new atom can be calculated by subtracting the mass number of the helium particle from the mass number of the original atom:
224 - 4 = 220
So, the atomic mass of the new atom is 220.
2. The atomic number of an atom represents the number of protons in its nucleus. In this nuclear reaction, a helium (He) particle, which contains 2 protons, is formed. The original atom, radium (Ra), has an atomic number of 88. Therefore, the new atom will have an atomic number of:
88 + 2 = 90
So, the atomic number of the new atom is 90.
3. The symbol of the new atom can be determined by considering its atomic number. In this case, the atomic number of the new atom is 90. Based on the periodic table, the element with an atomic number of 90 is thorium (Th). Therefore, the symbol of the new atom is Th.
4. The given nuclear reaction involves the formation of a helium (He) particle and a new atom with a higher atomic number. This type of decay is known as alpha decay, which occurs when an atom emits an alpha particle (a helium nucleus). Therefore, the type of decay demonstrated here is alpha decay.
Matching the answers with the options provided in Column B:
1. c. 90
2. a. 90
3. a. Th
4. k. Alpha Decay