The Schrodinger wave equation for the hydrogen atom is \(\psi_{2 s}=\frac{1}{4 \sqrt{2 \pi}}\left(\frac{1}{a_0}\right)^{3 / 2}\left(2-\frac{\mathrm{r}}{\mathrm{a}_0}\right) \mathrm{e}^{-\mathrm{r} / \mathrm{a}_0}\) where a0 is Bohr's radius. If the radial node in 2s be at r0, then r0 would be equal to:

1.  a02

2.  2a0

3.  2a0

4.  a02

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 58%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The Schrodinger wave equation for hydrogen atom is ψradial=1164Za03/2 σ-1 σ2-8σ+12e-σ/2 where a0 and Z are the constant in which answer can be expressed and σ=2Zra0 minimum and maximum position of radial nodes from nucleus are ........ respectively.

1.  a0Z, 3a0Z

2. a02Z, a0Z

3.  a02Z, 3a0Z

4.  a02Z, 4a0Z

Subtopic:  Quantum Numbers & Schrodinger Wave Equation |
 52%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Isodiaphers among the following options is :

1.  C614 and N1123 

2.  M1224g  and C1123 

3.  H24e  and O816 

4.  C612  and N715  

Subtopic:  Introduction of Atomic Structure | Number of Electron, Proton & Neutron |
 53%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The incorrect statement regarding the characteristics of X-rays is :

1. The radiation can ionize the gas

2. It causes a fluorescence effect on ZnS

3. It is deflected by electric and magnetic fields

4. Have a shorter wavelength than ultraviolet rays

Subtopic:  Introduction of Atomic Structure |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The correct expression derived for the energy of an electron in the nth energy level is for H-atom

1.  En=2π2 me4 K2n2 h2

2.  En=-π2 me4 K22n2 h2

3.  En=-2π2 me2 K2n2 h2

4.  En=-2π2 me4 K2n2 h2

Subtopic:  Bohr's Theory |
 59%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

For any H-like system, the ratio of velocities of I, II & III orbit i.e., V1 : V2 : V3 will be:

1.  1 : 2 : 3

2.  1 : 1/2 : 1/3

3.  3 : 2 : 1

4.  1 : 1 : 1

Subtopic:  Bohr's Theory |
 72%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Select the incorrect graph for velocity of e- in an orbit vs. Z, 1n and n:

1.  

2.  

3.  

4.  

Subtopic:  Bohr's Theory |
 64%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Number of waves produced by an electron in one complete revolution in nth orbit is:

1.  n

2.  n2

3.  n+1

4.  2n+1

Subtopic:  Bohr's Theory |
 52%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

The energy of an electron moving in nth Bohr's orbit of an element is given by En=-13.6n2Z2 eV/atom (Z=atomic number). The graph of E vs. Z2 (keeping "n" constant) will be:

1.  

2.  

3.  

4.  

Subtopic:  Bohr's Theory |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The spectrum produced from an element is:

1.  atomic spectrum

2.  line spectrum

3.  absorption spectrum

4.  any one of the above

Subtopic:  Type of Spectra |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh