Q3 / 100 · BITSAT 2023 (Memory Based Paper 1) · Chemistry

The probability density plots of $1 s$ and $2 s$ orbitals are given in figure.
Figure

The density of dots in a region represents the probability density of finding electrons in the region.
On the basis of above diagram which of the following statements is incorrect?

  • A
    $1 s$ and $2 s$ orbitals are spherical in shape.
  • B
    The probability of finding the electron is maximum near the nucleus.
  • C
    The probability of finding the electron at a given distance is equal in all directions.
  • Correct answer
    D
    The probability density of electrons for $2 s$ orbital decreases uniformly as distance from the nucleus increases.

Solution

The probability density of electrons in $2 s$ orbital first increases then decreases and after that it increases again as distance increases from nucleus.

Hence, the correct answer is option: 'D'.

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