Wave Properties of Electrons nodal plane nucleus represented by nucleus wave function (instantaneous picture) nodal plane Standing wave vibrates in fixed location. Wave function,y,is a mathematical description of size,shape,and orientation. Amplitude may be positive or negative. Node:Amplitude is zero. Chapter 2 2 Chapter 2 2 Wave Properties of Electrons • Standing wave vibrates in fixed location. • Wave function, , is a mathematical description of size, shape, and orientation. • Amplitude may be positive or negative. • Node: Amplitude is zero