Atomic Structure

Properties of waves are

The properties of electrons present in cthode ray tube resembles with

total no. of orbitals in 5th energy level:

The number of neutrons present in k(39,19) is:

velocity of photon is

total regions in electromagnetic spectra r

Centrifugal forces are balanced in atom by

Which of the following has same number of electrons as the alpha particle

The haviest particle is

with the reference of e/m ratio of anode rays, the e/m ratio of cathode rays is:

Orbitals having same energy are called

Atom with highier atomic number produces X-rays of

A proton is identical with

When the azimuthal quantum number (l) is 3, then m can have

In the ground state of atom the electron is present

Quantum number values for 2p subshell are:

2nd orbit is _______ away from nucleus of H-atom as compared to 1st orbit is

The letters s,p,d,f are used to represent which quantum number

radius of hydrogen atom in the ground state is 0.53 A, the radius of Li3+ in the similar state is

line spectra are characteristics of

Bohr`s atomic model of atom is contradicted by

positive rays are produced by

which pair of the elements will have the same chemical properties??

the azimuthal quantum number l=2 describes

Colour of fluorescence produced produced by cathode rays depend upon

Maximum capacity of a P- orbital is

when alpha particles are bombarded over Be atoms 9,4 atoms, neutrons are released along with

The lines of Balmer series lie in the visible region of the spectrum, but the limiting line in the series lies in

the velocity of electron will b max in

When 6d orbital is completed the entering electron will goes into

the ratio of ionization energy of H n Be3+ is

An electron has principal quantum no. n= 3. Which sub shell the electron must occupy?

Which electronic level in the H atom will allow absorption of energy and not the emission of energy:

charge to mass ratio was discoverd by

Two electrons occupying an orbital are distinguished by

which transition requires greater amount of energy , from

line of boublet structure z ____ frm each other

the ionic species having more electrons than proton is

as we moves away from nucleus ,the angular momentum of orbits

as we move away from the nucleus, the distance between shells:

e/m value for positive rays is maximum for

which of the following ions has more electrons than protons and more protons than neutrons?

which of the following particles has longest wavelength, if they have same speed:

Bohr model of atom explains