The probability density plots of 1s and 2s orbitals are given in Figure:

Chemistry | Class 11 | Exercise 1 | NCERT | Structure of Atom

The density of dots in a region represents the probability density of finding electrons in the region.

Based on the above diagram which of the following statements is incorrect?

(i) 1s and 2s orbitals are spherical.

(ii) The probability of finding the electron is maximum near the nucleus.

(iii) The probability of finding the electron at a given distance is equal in all directions.

(iv) The probability density of electrons for 2s orbital decreases uniformly as the distance from the nucleus increases.

Correct Answer: (iv) The probability density of electrons for 2s orbital decreases uniformly as the distance from the nucleus increases

Explanation: The size of the electron is round and is closer to the nucleus so the orbital 1s and 2s are round in shape and the probability of finding an electron is very large near the nucleus. And as the dots decrease in distance so the electron density of the 2s orbital electron decreases in the same way as the distance from the nucleus increases.

i

Which of the following compounds has tetrahedral geometry? (a) $\left[\mathrm{Ni}(\mathrm{CN})_{4}\right]^{-2}$ (b) $\left[\mathrm{Pd}(\mathrm{CN})_{4}\right]^{2-}$ (c) $\left[\mathrm{PdCl}_{4}\right]^{2-}$ (d) $\left[\mathrm{NiCl}_{4}\right]^{2}$

Find the vector equation of the line passing through the point with position vector and parallel to the vector Deduce the Cartesian equations of the line.

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