Electrons repel because they are charged and there is Coulomb repulsion between them.
This is not a phenomena that depends on quantum mechanics or the fact that they are moving in the same direction. Electrons repel when they are moving in any direction or not moving at all.
The quantum mechanical description of the time evolution of a two particle system will depend on the interaction between the two particles. It also depends on the spin and statistics of the particles. In this case they are two identical fermions with a Coulomb repulsion and unspecified spin. It has also not been specified whether the quantum state in question is an eigenstate of the Hamiltonian.
There is not much more to say other than one needs to be clear as to whether one is asking a question about the Hamiltonian or the wave function.
They do repel each other. I don't know who told you they didn't, but they were wrong.
1) what is electron? 2) what is matter? 3) structure of atom?
as electrons have same charge ,they repel each other when they come near
Neutrons do not have a net electrical charge, in other words they are electrically neutral. On the other hand, electrons have a negative charge, and they do repel each other since like charges repel. This is the same for protons except that protons are positively charged.
Yes, electron clouds have a negative charge. The electrons make up electron clouds (naturally) and the electron carries a negative electrostatic charge. Since electrons carry a negative electrostatic charge, and, by a fundamental principle of electrostatics like charges repel each other, the electrons don't like each other. That's one of the guiding principles behind electron spin and the structure of electron orbitals in chemistry and biochemistry. The big fat positive charge on the nucleus captures the electrons, but the electrons have to decide amongst themselves how they're gonna get along out in the electron shells. And they do. Is it any wonder that electron shell structures rule most of chemistry?
Electrons are negative. so no positive charges attracts electrons because the opposite charges attract each other like ( + - ) but same charges repel like ( ++ ) or ( - - )
they carry same charge thus repel as opposites attract each other
"Opposites attract". So two electrons repel each other.
1) what is electron? 2) what is matter? 3) structure of atom?
Each electron has a single negative charge. Objects with like charges repel each other. Therefore two electrons following parallel tracks will repel, not attract, each other.
as electrons have same charge ,they repel each other when they come near
They possess negative charges and in the universe anything having same charge would repel eachother.
Neutrons do not have a net electrical charge, in other words they are electrically neutral. On the other hand, electrons have a negative charge, and they do repel each other since like charges repel. This is the same for protons except that protons are positively charged.
Repel each other
Electrons have a negative charge, so they will repel away from one another. Electrons are attracted only to protons or other positive charges. if your question is whether,a negative charge attracts other, it is possible,if you place a charge of less magnitude near a charge of greater magnitude, one can attract other.this is due to the fact that, induction charges are set up in the lesser magnitude charge due to the greater magnitude charge.
Yes, electron clouds have a negative charge. The electrons make up electron clouds (naturally) and the electron carries a negative electrostatic charge. Since electrons carry a negative electrostatic charge, and, by a fundamental principle of electrostatics like charges repel each other, the electrons don't like each other. That's one of the guiding principles behind electron spin and the structure of electron orbitals in chemistry and biochemistry. The big fat positive charge on the nucleus captures the electrons, but the electrons have to decide amongst themselves how they're gonna get along out in the electron shells. And they do. Is it any wonder that electron shell structures rule most of chemistry?
electric charge, via the electromagnetic force.
Like charges repel each other due to the electromagnetic force. This means that if two charges have the same sign (positive or negative), they will push each other away. This behavior follows the principle that opposite charges attract while like charges repel.