Closely related to Hund's Rule is the Aufbau Principle, which states that electrons will fill the lower energy levels before moving to higher energy orbitals. Remember that each orbital has two electrons and the number of orbitals at an energy level depends on the first two quantum numbers.
Definition of venture. 1  1 obsolete : destiny, fortune, chance. 2  2a : an undertaking involving chance, risk, or danger; especially : a speculative business enterpriseb : a venturesome act. 3  3 : something (as money or property) at stake in a speculative venture.
Define undertaking: the act of one who undertakes or engages in a project or business; the business of an undertaker â undertaking in a sentence the act of one who undertakes or engages in a project or business; the business of an undertaker; something undertaken : enterpriseâ¦ See the full definition since 1828