Question

The number of nodes in graph $1,2,3$ and 4 respectively are:

• A. 0, 2, 1, 1
• B. 1, 3, 2, 2
• C. 1, 4, 3, 3
• D. 1, 1, 2, 0

Answer 1

The correct option is A 0, 2, 1, 1

The given plots represent the radial probability density graphs. It gives the probability of finding the electrons at a given distance from the nucleus.
Nodes are regions of space where the probability of finding an electron is zero.

In graph 1, there no nodes and in graph 2, there are two nodes, in graph 3, there is one node, in graph 4, there is one node.