How many neutrons are in the atom shown below?
26
Fe
55.845
(1 point)
30
82
26
55.845
The number of neutrons can be determined by rounding the atomic weight of the element to the nearest whole number and then subtracting the atomic number.
For Iron (Fe), the atomic number is 26 and the atomic weight is 55.845.
Rounding the atomic weight to the nearest whole number gives 56.
So,
number of neutrons = atomic weight - atomic number
number of neutrons = 56 - 26
number of neutrons = 30
Therefore, there are 30 neutrons in the atom shown.