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This Test Contains Questions from Chapter 5 CHEMISTRY.
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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