A neutron strikes an atom of uranium-235 to start a fission reaction. A student expresses this situation as 01n+235 92U . Which statement describes why the expression is incorrect?(1 point) Responses The mass number for uranium-235 is in the wrong location. The mass number for uranium-235 is in the wrong location. A neutron should be expressed as 10n , not 01n . A neutron should be expressed as 0 to the 1th power n, not 1 to the 0 power n. A neutron should be expressed as 11H , not 01n . A neutron should be expressed as 1 to the 1th power cap h, not 1 to the 0 power n. The atomic number for uranium-235 is in the wrong location. The atomic number for uranium-235 is in the wrong location.

1 answer

The statement that describes why the expression is incorrect is:

"A neutron should be expressed as \( ^1_0n \), not \( ^0_1n \)."

In nuclear notation, the correct symbol for a neutron is typically written with a mass number of 1 (since a neutron has a mass of approximately 1 amu) and an atomic number of 0 (since it has no charge), resulting in the notation \( ^1_0n \). The expression \( ^0_1n \) is not the correct standard notation for a neutron.