Question

write short note : NODES in the orbital .draw the shape of 2p orbitals and 1s and 2s orbital ??​

Answer 1

Orbital nodes refer to places where the quantum mechanical wave function Ψand its square Ψ2 change phase. Since the phase is either moving from positive to negative or vice versa, both Ψ and Ψ2 are zero at nodes.

Where Ψ2 is zero, the electron density is zero. Hence, at a node, the electron density is zero.

Nodes may be classed as radial, or angular.

What is a Node?

Consider the sine function sin x as a simple wave function Ψ. The diagram below shows:

when sin x is greater than zero, the phase of the wave is positive

when sin x is less than zero, the phase of the wave is negative

when sin x is zero, the point is described as a node

卄ㄖ卩乇 丨ㄒ 卄乇ㄥ卩丂 ㄚㄖ凵 ✌✌