Answered

Welcome to Westonci.ca, your one-stop destination for finding answers to all your questions. Join our expert community now! Our platform provides a seamless experience for finding precise answers from a network of experienced professionals. Get immediate and reliable solutions to your questions from a community of experienced professionals on our platform.

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

| Number of Protons | Number of Neutrons | Atomic Number | Mass Number | Element (symbol) |
|-------------------|--------------------|---------------|-------------|------------------|
| 20 | 20 | A | B | C |
| 9 | D | E | 19 | F |

Answers:
- A: 20
- B: 40
- C: Ca (Calcium)
- D: 10
- E: 9

Sagot :

GinnyAnswer
Let's complete the table step by step using the information provided and referring to the periodic table for any necessary additional data. We are given the following information:

### First Row:

- Number of Protons: 20
- Number of Neutrons: 20
- Atomic Number (A): ?
- Mass Number (B): ?
- Element Symbol (C): ?

1. The Atomic Number (A) corresponds to the number of protons, so [tex]\( A = 20 \)[/tex].
2. The Mass Number (B) is the sum of the number of protons and neutrons. Thus, [tex]\( B = 20 + 20 = 40 \)[/tex].
3. Using the Atomic Number (20), we can identify the element using the periodic table. Element number 20 is Calcium ([tex]\( \text{Ca} \)[/tex]). Therefore, the symbol (C) is [tex]\( \text{Ca} \)[/tex].

So, the first row completed is:
- Atomic Number (A): 20
- Mass Number (B): 40
- Element Symbol (C): [tex]\( \text{Ca} \)[/tex]

### Second Row:

- Number of Protons: 9
- Number of Neutrons: ?
- Atomic Number (E): ?
- Mass Number: 19
- Element Symbol (F): ?

1. The Atomic Number (E) corresponds to the number of protons, so [tex]\( E = 9 \)[/tex].
2. To find the number of neutrons (D), we use the Mass Number (19). The Mass Number is the sum of protons and neutrons, so:
[tex]\[ 19 = 9 + D \implies D = 19 - 9 = 10 \][/tex]
3. Using the Atomic Number (9), we can identify the element using the periodic table. Element number 9 is Fluorine ([tex]\( \text{F} \)[/tex]). Therefore, the symbol (F) is [tex]\( \text{F} \)[/tex].

So, the second row completed is:
- Number of Neutrons (D): [tex]\( 10 \)[/tex]
- Atomic Number (E): [tex]\( 9 \)[/tex]
- Element Symbol (F): [tex]\( \text{F} \)[/tex]

Let's summarize the 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 20 & 20 & 20 & 40 & \( \text{Ca} \) \\ \hline 9 & 10 & 9 & 19 & \( \text{F} \) \\ \hline \end{tabular} \][/tex]
Thank you for choosing our service. We're dedicated to providing the best answers for all your questions. Visit us again. Thanks for stopping by. We strive to provide the best answers for all your questions. See you again soon. Thank you for visiting Westonci.ca. Stay informed by coming back for more detailed answers.