Given the following nuclear reaction:

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.Gamma Decay
b.Alpha Decay
c.220
d.90
e.Rn
f.84
g.Ra
h.228
i.86
j.Th
k.Beta Decay
l.224
m.88

1. j. Th (Thorium)

2. f. 84
3. j. Th
4. k. Beta Decay

To determine the answers in Column A, we need to look at the given information in Column B.

1. The atomic mass of the new atom is given as 224 (option l).
2. The atomic number of the new atom is given as 88 (option m).
3. The symbol of the new atom is given as Ra (option g).
4. The type of decay demonstrated here is Alpha Decay (option b).

Therefore:
1. The atomic mass of the new atom is 224.
2. The atomic number of the new atom is 88.
3. The symbol of the new atom is Ra.
4. The type of decay demonstrated here is Alpha Decay.

To determine the answers to the questions in Column A, we need to analyze the given nuclear reaction and its products. Let's break it down:

1. The atomic mass of an atom is the sum of its protons and neutrons. Since the question asks for the atomic mass of the new atom, we need to determine the total number of protons and neutrons in the products of the reaction.

2. The atomic number of an atom represents the number of protons in its nucleus. Therefore, to find the atomic number of the new atom, we need to identify the number of protons in the products.

3. The symbol of an atom is determined by its atomic number and mass number. Hence, we need to determine the atomic number and mass number of the new atom to find its symbol.

4. To identify the type of decay demonstrated in the given reaction, we need to compare the reactant and product nuclei and figure out what changes occurred. Different types of decay include alpha decay, beta decay, and gamma decay.

Now, let's use the information provided in Column B to solve for each question:

1. The atomic mass of the new atom is given as 220 (option c).

2. The atomic number of the new atom is given as 88 (option m).

3. The symbol of the new atom is Rn (option e).

4. In order to determine the type of decay demonstrated by the reaction, we need to compare the reactant and product nuclei. However, the reaction is not provided, so we don't have enough information to answer this question. It remains unanswered.

To summarize the answers:

1. The atomic mass of the new atom: 220
2. The atomic number of the new atom: 88
3. The symbol of the new atom: Rn
4. Type of decay: Unable to determine without the reaction information.