This document discusses electron probability and orbitals, the periodic table, and Heisenberg's Uncertainty Principle. Heisenberg's Uncertainty Principle states that there is inherent uncertainty in measuring a particle's variable, such that measuring its position precisely makes its momentum less certain, and vice versa, according to a quote from Chemistry Libre Texts.

1. Electron probability and
orbitals
The importance of periodic table

2. Heisenberg's Uncertainty Principle
“Heisenberg's Uncertainty
Principle states that there is
inherent uncertainty in the act of
measuring a variable of a
particle. Commonly applied to the
position and momentum of a
particle, the principle states
that the more precisely the
position is known the more
uncertain the momentum is and vice
versa.” - Chemistry Libre Texts.

10. References:
Heisenberg's Uncertainty Principle. Chemistry Libre Texts.
<https://chem.libretexts.org/Core/Physical_and_Theoretical_Chemistry/Quantum_Mechanics/02._Fundamental_Concepts_of_Quantu
m_Mechanics/Heisenberg's_Uncertainty_Principle>