Which statement is true about the electrons that can be located together in an orbital?
the four electrons that share an orbital can be bonded together.

the two electrons that share an orbital repel each other.

the four electrons that share an orbital all have the same charge.

the two electrons that share an electron have opposite charges.

What happens to isotopes that are unstable?

Avariable that is not being directly tested during an experiment should be

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?