Quantum Theory and Electron Configurations

What does the number 2 represent in 1s²?

How many electrons can the 5th energy level hold?

When two electrons are in the same orbital, what is known about the direction of spin?

Who is credited with the idea that electrons are located in energy levels and can move between them?

Which of the following statements is not correct?

Which element has the electron configuration 1s²2s²2p⁵?

What does the letter s represent in 1s²?

How many electrons can an orbital hold?

The idea that electrons can only be found at certain distances from the nucleus is known as?

When an electron moves from the excited to ground state, what happens?

All of the Noble Gases except Helium have an electron configuration that ends with?

What does the number 1 represent in 1s²?

According to quantum theory, electrons fill the lowest energy levels first.

The location where electrons are likely to be found are called?

When an electron moves to a higher energy level, it is in what state?