A neutron is placed in the center of three protons such that the protons sit on the vertices of a right angled triangle and the neutron is placed right at the center. What will be the effect seen?

No effect

1. The protons will not get pulled in as they would already be repelling each other.
2. There's no reason for the neutron to get pushed out of the triangle as neutron will NOT experience any electrostatic force.
3. Why at all will protons move in circular orbits if the triangle in question is a right triangle ?!