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Unformatted text preview: 1 node 2 nodes Route 2 : You can also use a formula to calculate the number of radial nodes. # Radial Nodes = n l-1 Where n and l are you orbital quantum #s 3 nodes 10/16/10 Lets compare a 4s vs. a 5s First , write down the quantum numbers for each: n=4 n=5 l=0 l=0 Okay, they both have the same SHAPE (b/c l=0, which is an s orbital a sphere). Second , determine the number of radial nodes: For 4s For 5s Route 1: its in purple region = 3 nodes its after purple = 4 nodes! Or Route 2: # = 4-0-1 = 3 # = 5-0-1 = 4 The dotted lines represent the radial nodes. Drawing : First draw the shape (for these examples, its an s orbital, so its basically a circle. Then add the nodes with dotted lines in the same shape as additional layers....
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