Structure of At...

If 3d orbitals are completely filled, the new electron will enter in

spin quantum number with two spin states of the electron represented by two arrows, ↑ (spin up) and ↓ (spin down) was introduced to account for

According to Pauli’s exclusion principle

The KE of an electron is 2.8 10^–23 J. Its de Broglie wavelength is nearly (M_e = 9.1 10^–31 kg)

Quantum mechanics is a theoretical science that deals with the study of the

Directions: The following question has four choices out of which ONLY ONE is correct.

For an electron in , the values of quantum numbers are

According to the Heisenberg uncertainty principle, in dealing with milligram-sized or heavier objects,

The momentum of a particle having de Broglie wavelength of 0.1 nm is

Which of the following expressions gives the de Broglie relationship?

Directions: The r-dependent wave function of hydrogen atom is given by the expression



The above wave function represents

Which d orbital does not have four lobes?

How many electrons can be accommodated in a subshell with n = 3 and  = 1?

The number of radial nodes in the 3p probability density distribution is

An electron is accelerated through a potential difference of 500 V. Its de Broglie wavelength would be

Directions: The following question has four choices out of which ONLY ONE is correct.

An orbit differs from an orbital in that

The angular dependence of an orbital is decided by the

An electron with which of the following sets of quantum numbers will have the highest energy?

Which of the following sets of quantum numbers is an impossible arrangement?

The maximum number of electrons having n = 1, l = 0, m = 0 and s = 1/2, is

According to quantum theoretical model of an atom each orbital is designated by three quantum numbers labelled as n, l and ml. These are referred to respectively as

According to quantum theoretical model of an atom each orbital is designated by three quantum numbers labelled as n, l and ml. The values these can take are

The Aufbau principle states : In the ground state of the atoms, the orbitals are filled in order of

The uncertainty in the position of an electron (mass = 9.1 10^–28 g) moving with a velocity of 3.0 10⁴ cms^–1 (accurate up to 0.011%) will be

According to quantum mechanics ψ²(r) the wave function squared gives

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

Which of the following statements for atomic wave function is not correct?

Due to the presence of electrons in the inner shells, the electron in the outer shell will not experience the full positive charge of the nucleus (Z_e). This is known as

If an electron is to be located within 0.1 nm, the approximate uncertainty in its speed will be about

What is the electronic configuration of Mn²⁺?

Daltons atomic theory could not explain one of the following