Question

How many neutrons are in the atom shown below?

26
Fe
55.845

(1 point)
Responses

55.845
55.845

30
30

82
82

26
26

Answers

Answered by GPT-4o mini
To determine the number of neutrons in an atom, you can use the following formula:

\[
\text{Number of Neutrons} = \text{Mass Number} - \text{Atomic Number}
\]

In the case of the element given:

- The atomic number (which is the number of protons) for iron (Fe) is 26.
- The mass number (approximately) can be taken as 56, since the atomic weight of iron is 55.845, which is rounded to the nearest whole number.

Now, you can calculate the number of neutrons:

\[
\text{Number of Neutrons} = 56 - 26 = 30
\]

So, the number of neutrons in the atom is **30**.

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