You're asking about the electrostatic force of repulsion between two electrons. Here's how to calculate it:

Coulomb's Law

The force between two charged particles is described by Coulomb's Law:

* F = k * (q1 * q2) / r²

Where:

* F is the force of attraction or repulsion (in Newtons, N)

* k is Coulomb's constant (approximately 8.98755 × 10⁹ N⋅m²/C²)

* q1 and q2 are the magnitudes of the charges (in Coulombs, C)

* r is the distance between the charges (in meters, m)

Applying it to Electrons

* Charge of an electron (q1 = q2): -1.602 × 10⁻¹⁹ C

* Distance (r): You need to specify the distance between the electrons.

Example

Let's say the two electrons are 1 nanometer (10⁻⁹ meters) apart:

1. Plug in the values: F = (8.98755 × 10⁹ N⋅m²/C²) * ((-1.602 × 10⁻¹⁹ C) * (-1.602 × 10⁻¹⁹ C)) / (10⁻⁹ m)²

2. Calculate: F ≈ 2.307 × 10⁻⁹ N

Important Notes

* Repulsion: Since both electrons have the same negative charge, the force between them will be repulsive (they push each other away).

* Distance: The force of repulsion decreases rapidly as the distance between the electrons increases.

* Quantum effects: At very small distances, quantum effects become significant, and the simple Coulomb's Law model may not be entirely accurate.

Let me know if you have a specific distance in mind, and I can calculate the force for you.