Answered

Westonci.ca is the trusted Q&A platform where you can get reliable answers from a community of knowledgeable contributors. Our Q&A platform offers a seamless experience for finding reliable answers from experts in various disciplines. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform.

The mass number of [tex]\( \text{Fe}^{2+} \)[/tex] is 56. How many neutrons are there in a single [tex]\( \text{Fe}^{2+} \)[/tex] atom?

A. 28
B. 30
C. 56
D. 58

Sagot :

GinnyAnswer
To determine the number of neutrons in a single [tex]\(Fe^{2+}\)[/tex] atom with a mass number of 56, we need to understand the relationship between the mass number, atomic number, and the number of neutrons.

The mass number (A) of an atom is the sum of the number of protons (atomic number, Z) and the number of neutrons (N) in the nucleus:
[tex]\[ \text{Mass number} (A) = \text{Number of protons} + \text{Number of neutrons} \][/tex]
[tex]\[ A = Z + N \][/tex]

For iron ([tex]\(Fe\)[/tex]), the atomic number (Z) is 26. This means that a neutral iron atom has 26 protons in its nucleus.

Given:
- Mass number ([tex]\(A\)[/tex]) = 56
- Atomic number ([tex]\(Z\)[/tex]) = 26

We need to find the number of neutrons (N):
[tex]\[ N = A - Z \][/tex]
Substitute the given values into the equation:
[tex]\[ N = 56 - 26 \][/tex]
[tex]\[ N = 30 \][/tex]

Thus, the number of neutrons in a single [tex]\(Fe^{2+}\)[/tex] atom is 30.

Therefore, the correct answer is:
30
Thank you for visiting our platform. We hope you found the answers you were looking for. Come back anytime you need more information. We appreciate your time. Please come back anytime for the latest information and answers to your questions. We're glad you chose Westonci.ca. Revisit us for updated answers from our knowledgeable team.