To complete the table describing each atom using the information provided:
### Step-by-Step Solution:
1. Determine Protons (A) for the first atom:
Given in the table: Protons = 7
2. Determine Neutrons (B) for the first atom:
The mass number in the table is given as 15. Using the relation:
[tex]\[
\text{Mass Number} = \text{Protons} + \text{Neutrons}
\][/tex]
We can find Neutrons (B) by:
[tex]\[
\text{Neutrons} = \text{Mass Number} - \text{Protons} = 15 - 7 = 8
\][/tex]
3. Determine Symbol (C) for the first atom:
The atomic number (number of protons) is 7, which corresponds to Nitrogen (N) in the periodic table.
4. Determine Protons (D) for the second atom:
Given in the table: Protons = 26
5. Determine Neutrons (E) for the second atom:
The mass number in the table is given as 56. Using the same relation:
[tex]\[
\text{Neutrons} = \text{Mass Number} - \text{Protons} = 56 - 26 = 30
\][/tex]
6. Determine Symbol (F) for the second atom:
The atomic number (number of protons) is 26, which corresponds to Iron (Fe) in the periodic table.
### Completed Table:
[tex]\[
\begin{tabular}{|c|c|c|c|c|}
\hline
\text{Protons} & \text{Neutrons} & \text{Number} & \text{Number} & (\text{symbol}) \\
\hline
A & 7 & B & 15 & C \\
\hline
7 & 8 & 15 & \text{B} & \text{N} \\
\hline
26 & E & 26 & 56 & F \\
\hline
26 & 30 & 26 & 56 & \text{Fe} \\
\hline
\end{tabular}
\][/tex]
So, the answers to fill in the boxes are:
A = 7,
B = 8,
C = N,
D = 26,
E = 30,
F = Fe
