Which of the following statement is correct?

1.  Number of angular nodes = n-l-1

2.  Number of radial nodes = l

3.  Total number of nodes = n-1

4.  All

Difficulty Level:

Maximum number of total nodes is present in:

1.  5s

2.  5p

3.  5d

4.  All have same number of nodes

Difficulty Level:

Which of the following orbitals has two spherical nodes?

1.  2s

2.  4s

3.  3d

4.  6f

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Difficulty Level:

The correct Schrodinger's wave equation for a electron with total energy E and potential energy V is given by

1.

2.

3.

4.  None of the above.

Difficulty Level:

Wave mechanical model of the atom depends upon

1.  De-Broglie concept of dual nature of electron

2.  Heisenberg uncertainty principle

3.  Schrodinger uncertainty principle

4.  All

Difficulty Level:

represents: (for Schrodinger wave mechanical model)

1.  Amplitude of electron wave

2.  Probability density of electron

3.  Total probability of finding electron around nucleus

4.  Orbit

Difficulty Level:

Radial amplitude of electron wave can be represented by

1.  $\mathrm{R}\left(\mathrm{r}\right)$

2.  ${\mathrm{R}}^{2}\left(\mathrm{r}\right)$

3.  $4{\mathrm{\pi r}}^{2}$

4.  $4{\mathrm{\pi r}}^{2}{\mathrm{R}}^{2}\left(\mathrm{r}\right)$

Difficulty Level:

The Schrodinger wave equation for hydrogen atom is  where ${\mathrm{a}}_{0}$ is Bohr's radius. If the radial node in 2s be at ${\mathrm{r}}_{0}$, then ${\mathrm{r}}_{0}$ would be equal to:

1.  $\frac{{\mathrm{a}}_{0}}{2}$

2.  $2{\mathrm{a}}_{0}$

3.  $\sqrt{2}{\mathrm{a}}_{0}$

4.  $\frac{{\mathrm{a}}_{0}}{\sqrt{2}}$

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Difficulty Level:

The Schrodinger wave equation for hydrogen atom is  where ${\mathrm{a}}_{0}$ and Z are the constant in which answer can be expressed and $\mathrm{\sigma }=\frac{2\mathrm{Zr}}{{\mathrm{a}}_{0}}$ minimum and maximum position of radial nodes from nucleus are ........ respectively.

1.

2.

3.

4.

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Difficulty Level:

Which of the following pair is isodiaphers?

1.

2.

3.

4.