Recent questions tagged quantum mechanical model of atom

+2 votes

1 answer

Assertion: In a metal all the free electrons have same energy. Reason : Electrons do not obey Pauli'* exclusion principle.

asked Apr 6, 2019 in Class 11 by kratos

+3 votes

1 answer

State de-Broglie concept of dual nature of matter. How do dual nature of electron verified?

asked Apr 5, 2019 in Class 12 by kratos

+1 vote

1 answer

Which one of the following about an electron occupying the 1s orbital in a hydrogen atom is incorrect ?

asked Apr 4, 2019 in Class 12 by kratos

+1 vote

1 answer

According to the Bohr theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?

asked Mar 31, 2019 in Class 12 by kratos

+3 votes

1 answer

If uncertainty in the position of an electron is zero, the uncertainty in its momentum would be

asked Mar 30, 2019 in JEE by kratos

+2 votes

1 answer

What is the total number of orbitals associated with the principal quantum number n=3 ?

asked Mar 26, 2019 in JEE by kratos

+1 vote

1 answer

The electronic configuration of an element is 1s^2 , 2s^2 ,2p^6 ,3s^2 , 3p^6 ,3d^5 4s^1. This represents its

asked Mar 24, 2019 in Class 12 by kratos

+1 vote

1 answer

The Fermi lab accelerator is one of the largest particle accelerators. In this accelerator, protons are forced to travel

asked Mar 19, 2019 in Physics by kratos

+2 votes

1 answer

What is the value of de-Broglie wavelength for an aparticle haveing mass

asked Mar 14, 2019 in JEE by kratos

+2 votes

1 answer

Use Hund’* rule to derive the electronic configuration of Ce3+

asked Mar 11, 2019 in Class 12 by kratos

+3 votes

1 answer

If the uncertainty in the position of an electron is zero, the uncertainty in its momentum be

asked Mar 10, 2019 in JEE by kratos

+1 vote

1 answer

Calculate the energy required for the process He^+ (g) → He^2+ (g) + e^-

asked Mar 7, 2019 in Class 11 by kratos

+3 votes

1 answer

The electron in the hydrogen atom is moving with a speed of 2.3 × 10^6 m/* in an orbit of radius 0.53 .

asked Mar 7, 2019 in Physics by kratos

+1 vote

1 answer

Draw diagram of the experimental arrangement of Davisson and Germer experiment.

asked Mar 6, 2019 in Class 12 by kratos

+3 votes

1 answer

The uncertainty in the position of a moving bullet of mass 10g is 10^-5m.Calculate the uncertainty in the velocity.

asked Mar 5, 2019 in Class 12 by kratos

+1 vote

1 answer

Outermost configuration 3d^64s^2 is of:

asked Feb 26, 2019 in Class 12 by kratos

+3 votes

1 answer

Schrodinger wave equation is linear for

asked Feb 26, 2019 in Class 11 by kratos

+2 votes

0 answers

The radius of first Bohr orbit of hydrogen atom is 0.529 A. Calculate the radii of

asked Feb 23, 2019 in Class 12 by kratos

+3 votes

1 answer

The radius of the first electron orbit of a hydrogen atom is 0.5 . The electron moves in this orbit with a uniform

asked Feb 15, 2019 in Physics by kratos

+3 votes

1 answer

Which of the following statement (*) is (are) correct ? (a) The electronic configuration of Cr is [Ar] 3d^5 4s^1 (Atomic number of Cr = 24).

asked Feb 14, 2019 in JEE by kratos

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