An atom of fluorine (F) has an atomic number of 9 and approximate atomic weight of 19. Based on this data, co questions. (Answers may be used more than once)
1
7
10
19
2
9
Number of protons protons
Number of neutrons:
neutrons
Total number of electrons
electrons
Number of electrons in innermost electron shell electrons
Number of electrons in the second electron shell (moving out from the nucleus) electrons
The Correct Answer and Explanation is :
Let’s break down the information given for the atom of fluorine (F):
- Atomic number (Z) = 9
- Atomic weight ≈ 19
1. Number of protons
The atomic number of an element tells us the number of protons in its nucleus. So, the number of protons in a fluorine atom is 9.
2. Number of neutrons
To calculate the number of neutrons, subtract the atomic number from the atomic mass (rounded to the nearest whole number):
[
\text{Number of neutrons} = \text{Atomic weight} – \text{Atomic number} = 19 – 9 = 10
]
So, the number of neutrons in fluorine is 10.
3. Total number of electrons
In a neutral atom, the number of electrons equals the number of protons. Since the fluorine atom is neutral (no charge), it has the same number of electrons as protons. Therefore, the total number of electrons in fluorine is 9.
4. Number of electrons in the innermost electron shell
The first electron shell can hold up to 2 electrons. Since fluorine has 9 electrons, the innermost shell will hold 2 electrons.
5. Number of electrons in the second electron shell
The second electron shell can hold up to 8 electrons. After filling the first shell with 2 electrons, there are 7 electrons remaining. Therefore, the second shell of fluorine contains 7 electrons.
Summary:
- Number of protons = 9
- Number of neutrons = 10
- Total number of electrons = 9
- Number of electrons in the innermost shell = 2
- Number of electrons in the second shell = 7
The atom of fluorine has 9 protons, 10 neutrons, and 9 electrons, with 2 in the innermost shell and 7 in the second shell.
Now, let’s generate an image of the electron configuration for fluorine.
Here is the diagram of the electron configuration for a fluorine atom. It shows the nucleus with 9 protons and 10 neutrons, and the electron arrangement in two shells: 2 electrons in the first shell (K shell) and 7 electrons in the second shell (L shell). This diagram helps visualize the structure and electron distribution of fluorine. Let me know if you’d like further clarification!