11th Chemistry Monthly Test - 3 ( Quantum Mechanical Model of Atom )

MABS Institution

11th Chemistry Monthly Test - 3 ( Quantum Mechanical Model of Atom )-Aug 2020

Time : 2.00 Hours

Part - A

Generic 2 - Answer All Question

Define orbital? what are the n and 1 values for 3p_x and 4d_x²_-_y² electron?

How many radial nodes for 2s, 4p, 5d and 4f orbitals exhibit? How many angular nodes

What is the difference between atomic mass and mass number?

The stabilisation of a half filled d - orbital is more pronounced than that of the p-orbital why?

Which quantum number reveal information about the shape, energy, orientation and size of orbitals?

Consider the following electronic arrangements for the d⁵ configuration.
(a)

\(\upharpoonleft \downharpoonright \) \(\upharpoonleft \downharpoonright \) \(\upharpoonleft \)

(b)

\(\upharpoonleft \) \(\upharpoonleft \) \(\upharpoonleft \) \(\upharpoonleft \downharpoonright \)

(c)

\(\upharpoonleft \) \(\upharpoonleft \) \(\upharpoonleft \) \(\upharpoonleft \) \(\upharpoonleft \)

(i) which of these represents the ground state
(ii) which configuration has the maximum exchange energy.

What are the defects of Rutherford's model?

An atom of an element contains 35 electrons and 45 neutrons. Deduce
(i) the number of protons
(ii) the electronic configuration for the element
(iii) All the four quantum numbers for the last electron

How fast must a 54g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green light 5400\(\overset { 0 }{ A } \) ?

Write a note on Thomson's plum pudding model of an atom.

What did Rutherford's alpha ray scattering experiment prove

Give the number of electrons in the following species. H₂ , H₂ , O₂ and O_2^-

For each of the following, give the sub level designation, the allowable m values and the number of orbitals
(i) n = 4, l=2, (ii) n = 5, l=3 (iii) n = 7, l=0

What is the charge and mass of an electron?

Part - B

Generic 3 - Answer All Question

Write the values of I and m for p-orbitals

What is the maximum number of electrons that can be accommodated in a shell?

List the quantum numbers (m₁ and l) of electrons for 3d-orbital.

Two particles A and B are in motion. If the wavelength associated with the particle A is 5 \(\times\) 10^-8 cm calculate the wavelength of particle B, if its momentum is half of A.

Write note on the necessity for Hund's rule.

How does the Bohr theory of the hydrogen atom differ from that of Schrodinger?

An atomic orbital has n = 3. What are the possible values of 1 and m₁?

Calculate the uncertainty in position of an electron, if Av = 0.1% and \(\upsilon \) = 2.2 x 10⁶ms^-1.

Write a note on the shape of f orbitals

An electron a proton which one will have a higher velocity to produce matter waves of the same wavelength? Explain it

What do you understand by dual character of matter?

Which orbital in each of the following pairs is lower in energy?
(i) 2s,2p (ii) 3p < 3d (iii) 3s < 4s (iv) 4d < 5f

Which quantum accounts for the orientation of the electron orbital?

An atom of an element contains 29 electrons and 35 neutrons. Deduce
(i) the number of protons.
(ii) the electronic configuration of the element.

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11th Chemistry Monthly Test - 3 ( Quantum Mechanical Model of Atom )

MABS Institution

11th Chemistry Monthly Test - 3 ( Quantum Mechanical Model of Atom )-Aug 2020

Part - A

Generic 2 - Answer All Question

Define orbital? what are the n and 1 values for 3px and 4dx2-y2 electron?

How many radial nodes for 2s, 4p, 5d and 4f orbitals exhibit? How many angular nodes

What is the difference between atomic mass and mass number?

The stabilisation of a half filled d - orbital is more pronounced than that of the p-orbital why?

Which quantum number reveal information about the shape, energy, orientation and size of orbitals?

What are the defects of Rutherford's model?

An atom of an element contains 35 electrons and 45 neutrons. Deduce (i) the number of protons (ii) the electronic configuration for the element (iii) All the four quantum numbers for the last electron

How fast must a 54g tennis ball travel in order to have a de Broglie wavelength that is equal to that of a photon of green light 5400\(\overset { 0 }{ A } \) ?

Write a note on Thomson's plum pudding model of an atom.

What did Rutherford's alpha ray scattering experiment prove

Give the number of electrons in the following species. H2 , H2 , O2 and O2-

For each of the following, give the sub level designation, the allowable m values and the number of orbitals (i) n = 4, l=2, (ii) n = 5, l=3 (iii) n = 7, l=0

What is the charge and mass of an electron?

Part - B

Generic 3 - Answer All Question

Write the values of I and m for p-orbitals

What is the maximum number of electrons that can be accommodated in a shell?

List the quantum numbers (m1 and l) of electrons for 3d-orbital.

Two particles A and B are in motion. If the wavelength associated with the particle A is 5 \(\times\) 10-8 cm calculate the wavelength of particle B, if its momentum is half of A.

Write note on the necessity for Hund's rule.

How does the Bohr theory of the hydrogen atom differ from that of Schrodinger?

An atomic orbital has n = 3. What are the possible values of 1 and m1?

Calculate the uncertainty in position of an electron, if Av = 0.1% and \(\upsilon \) = 2.2 x 106 ms-1.

Write a note on the shape of f orbitals

An electron a proton which one will have a higher velocity to produce matter waves of the same wavelength? Explain it

What do you understand by dual character of matter?

Which orbital in each of the following pairs is lower in energy? (i) 2s,2p (ii) 3p < 3d (iii) 3s < 4s (iv) 4d < 5f

Which quantum accounts for the orientation of the electron orbital?

An atom of an element contains 29 electrons and 35 neutrons. Deduce (i) the number of protons. (ii) the electronic configuration of the element.

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Define orbital? what are the n and 1 values for 3p_x and 4d_x²_-_y² electron?

An atom of an element contains 35 electrons and 45 neutrons. Deduce
(i) the number of protons
(ii) the electronic configuration for the element
(iii) All the four quantum numbers for the last electron

Give the number of electrons in the following species. H₂ , H₂ , O₂ and O_2^-

For each of the following, give the sub level designation, the allowable m values and the number of orbitals
(i) n = 4, l=2, (ii) n = 5, l=3 (iii) n = 7, l=0

List the quantum numbers (m₁ and l) of electrons for 3d-orbital.

Two particles A and B are in motion. If the wavelength associated with the particle A is 5 \(\times\) 10^-8 cm calculate the wavelength of particle B, if its momentum is half of A.

An atomic orbital has n = 3. What are the possible values of 1 and m₁?

Calculate the uncertainty in position of an electron, if Av = 0.1% and \(\upsilon \) = 2.2 x 10⁶ms^-1.

Which orbital in each of the following pairs is lower in energy?
(i) 2s,2p (ii) 3p < 3d (iii) 3s < 4s (iv) 4d < 5f

An atom of an element contains 29 electrons and 35 neutrons. Deduce
(i) the number of protons.
(ii) the electronic configuration of the element.