Answered

Identifying Characteristics of Atoms

| Number of Protons | Number of Neutrons | Atomic Number | Mass Number | Element (symbol) |
|-------------------|--------------------|---------------|-------------|------------------|
| A | 7 | B | 15 | C |
| D | E | 26 | 56 | F |

Using the periodic table, complete the table to describe each atom:

A: [tex]$\square$[/tex]
B: [tex]$\square$[/tex]
C: [tex]$\square$[/tex]
D: [tex]$\square$[/tex]
E: [tex]$\square$[/tex]
F: [tex]$\square$[/tex]



Answer :

Let's complete the table step-by-step:

### For the first row:
1. Finding the Number of Protons (A):
- Given: Atomic Number is the number of protons.
- Atomic Number = 7
- Therefore, the number of protons (A) = 7

2. Finding the Number of Neutrons (B):
- Given: Mass Number = 15
- Number of Neutrons (B) = Mass Number - Number of Protons = 15 - 7
- Therefore, the number of neutrons (B) = 8

3. Finding the Atomic Number:
- Already known from the given data.
- Atomic Number = 7

4. Identifying the Element (C) using the Atomic Number:
- Given: Atomic Number = 7
- Looking up Atomic Number 7 in the periodic table, the element is Nitrogen (symbol N).
- Therefore, the element (C) is N.

### For the second row:
1. Finding the Number of Protons (D):
- Given: Atomic Number is the number of protons.
- Atomic Number = 26
- Therefore, the number of protons (D) = 26

2. Finding the Number of Neutrons (E):
- Given: Mass Number = 56
- Number of Neutrons (E) = Mass Number - Atomic Number = 56 - 26
- Therefore, the number of neutrons (E) = 30

3. Finding the Atomic Number:
- Already known from the given data.
- Atomic Number = 26

4. Identifying the Element (F) using the Atomic Number:
- Given: Atomic Number = 26
- Looking up Atomic Number 26 in the periodic table, the element is Iron (symbol Fe).
- Therefore, the element (F) is Fe.

### Completed Table:
[tex]\[ \begin{tabular}{|c|c|c|c|c|} \hline \begin{tabular}{c} Number of \\ Protons \end{tabular} & \begin{tabular}{c} Number of \\ Neutrons \end{tabular} & \begin{tabular}{c} Atomic \\ Number \end{tabular} & \begin{tabular}{c} Mass \\ Number \end{tabular} & \begin{tabular}{c} Element \\ (symbol) \end{tabular} \\ \hline 7 & 8 & 7 & 15 & N \\ \hline 26 & 30 & 26 & 56 & Fe \\ \hline \end{tabular} \][/tex]