Round off each of the following numbers to three significant digits, and express the result in standard scientific notation. a. 254,931 c. 47.85 _ 103 b. 0.00025615 d. 0.08214 _ 105

p , p and p orbitals x y z Typically, the three p orbitals for a particular principle quantum number n are denoted p , x py zp and drawn as identical functions pointing along the x, y and z axes However, the p andxp orbityls do not correspond to the solutions with m = +1 and -1 l Orbital shading and wavefunction signs ▯ Wavefunctions are signed quantities. ▯ The sign maters when we are considering bonding in molecules. ▯ The wavefunction’s sign is often indicated graphically by shading on a boundary representation of an orbital d orbitals d orbitals as conventionally drawn do not correspond to well defined values of m l Multielectron atoms ▯ The Schrödin