ai test 1 Questions

Number of waves in fifth Bohr orbit of H-atom is;

In a hydrogen spectrum, if transition of electrons takes place from 3rd to 1st orbit, then the total number of spectral lines obtained in the spectrum is;

Given below are two statements: Statement I: does not carry any physical meaning. Statement II: is known as probability density. In the light of the above statements, choose the most appropriate answer from the options given below:

A radio station broadcasts at frequency of Hz. The wavelength of the electromagnetic waves emitted is:

Match List-I with List-II Choose the correct answer from the options given below:

For a d-electron, the orbital angular momentum is;

Maximum number of exchanges possible for completely half filled d-subshell is;

The number of radial nodes of 3s and 2s orbitals respectively are;

The energy of a photon is directly proportional to (I) Wave number (II) Frequency (III) Wavelength Select the correct option;

The ratio of kinetic energy and total energy of an electron in a Bohr orbit of a hydrogen like species is:

Which of the following atom does not contain the same number of protons and neutrons in its nucleus?

Which of the following electronic transition in hydrogen atom will emit largest amount of energy?

Which of the following statements does not form a part of Bohr's model of hydrogen atom?

Which of the following set of quantum number is not possible?

Maximum wavelength among the following is of;

The de Broglie wavelength of a particle of mass , moving with velocity is (given: ).

If the number of protons and neutrons in an element is 13 and 14 respectively, then what's the atomic number() and mass number() of that element?

What is the shape of the orbital, whose "” is 1?

If the energy of electron in H atom is given by expression, , then the energy required to excite the electron from ground state to second orbit is:

In Bohr's stationary orbits:

The energy of second Bohr orbit of the hydrogen atom is ; hence the energy of fourth Bohr orbit would be:

An isobar of is:

The correct statement about proton is:

When a gold sheet is bombarded by a beam of -particles, only a few of them get deflected, whereas most go straight, undeflected. This is because;

The maximum kinetic energy of the photoelectrons is found to be , when the metal is irradiated with a radiation of frequency . The threshold frequency of the metal is about: