Wavefunction collapse is when a quantum states' wavefunction is disturbed by an observer just by observing it. The position or momentum prior to observation is completely changed

A wavefunction is a representation of the state of a quantum system. A quantum state is a vector belonging in an abstract space (the Hilbert space), while a wavefunction is a complex function given in terms of a Hermitian variable (usually position or momentum). When "wavefunction" is used unqualified (as opposed to "wavefunction in momentum space"), it is taken to mean the wavefunction in terms of position. In case of single-particle systems, the modulus squared of the wavefunction at a given position represents the probability density of the particle to be at that position.

We would need to know what wavefunction to respond to this question.

One of many, many possibilities would simply be y = sin x.

An exciplex is an excited state whose wavefunction overlaps a neighboring, dissimilar molecule. In contrast to an exciplex, an excimer is an emissive excited state whose wavefunction overlaps two adjacent molecules of like composition.

Normalization in quantum mechanics is important because it ensures that the wavefunction describing the state of a system has a well-defined probability interpretation. The wavefunction must be normalized, meaning that the integral of the squared magnitude of the wavefunction over all space is equal to 1. This allows us to interpret the square of the wavefunction as the probability density of finding the particle in a particular state.