Multiple choice

Directions: In the following question, there are two statements labelled as Assertion (A) and Reason (R). Mark your answer as : (a) if both A and R are true and R is the correct explanation of A. (b) if both A and R are true but R is not the correct explanation of A. (c) if A is true but R is false. (d) if A is false but R is true. (e) if both A and R are false. Assertion: The radial probability distribution curve of 2s, 3p, 4d and 5f orbitals are identical in shape. Reason: The number of plane nodes present in these orbitals is different.

  1. (a)

  2. (b)

  3. (c)

  4. (d)

  5. (e)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Both A and R are correct because the radial probability distribution curve of 2s, 3p, 4d and 5f orbitals are identical in shape due to presence of one radial node and not a number of plane node. Radial nodes: Radial nodes are nodes which are area of zero probability of finding an electron and radiate like circle away from the nucleus. Plane nodes: Plane nodes separate the different sign of the orbitals. For example, p-orbital have one plane node that separates the two lobes of the p-orbital.

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