Two-electron atom

An atom is like a tiny, tiny ball that's made up of even tinier things called particles. One of these particles is called an electron. Some atoms have only one electron, while others have more. When an atom has two electrons, we call it a two-electron atom.

Inside a two-electron atom, the two electrons move around a central part called the nucleus. The nucleus is made up of even smaller particles called protons and neutrons.

The electrons have to follow certain rules about where they can be and how they move. It's kind of like how you have to follow rules on a playground - you can't run around wherever you want or you might get hurt.

In a two-electron atom, the electrons have to stay far away from each other because they have the same charge, like two magnets that repel each other. They each have to occupy different regions around the nucleus, which we call orbitals.

These orbitals are like houses for the electrons, and they have different shapes and sizes. One orbital is like a sphere and the other looks like a dumbbell. The two electrons will each live in one of these orbitals and they keep spinning around in their own little space, following the rules of the atom.

Overall, a two-electron atom is just a tiny, tiny thing with two even tinier things inside called electrons. These electrons have to follow rules about where they can be and how they move, and they each live in their own little house around the nucleus. It's all very organized and neat, just like a playground with rules for where you can play and what you can do.