Question

Which of the following is the correct plot for the probability density ψ² (r) as a function of distance 'r' of the electron from the nucleus for 2s orbitals?

Options

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Answer 1

Explanation:

Plot of ψ² (r) v/s 'r' for 2s orbital of single electron species.

For 2s orbital,

n = 2, l = 0

So, radial node = n - l - 1

= 2 - 0 - 1

= 1

Hence, there is 1 radial node present. The value of ψ² is always positive.