Atoms Test - 56...

When hydrogen atom is in its first excited level, its radius is how many times its ground state radius:

When hydrogen atom is in its first excited level, its radius is _______ of the Bohr radius.

In a beryllium atom, if $$a_{0}$$ be the radius of the first orbit, then the radius of the second will be in general.

The colour which corresponds to $$\mathrm { H } _ { \mathrm { B } } ( 4 \rightarrow 2 )$$ linein the Balmer series of hydrogen spectra is:

A proton and an $$\alpha$$ particle having equal kinetic energy are projected in a uniform transverse electric field as shown in figure

In a hydrogen like atom, when an electron jumps from the M-shell to the L-shell, the wavelength of emitted radiation is $$\lambda$$. If an electron jumps from N-shell to the L-shell, the wavelength of emitted radiation will be?

A particle moves along X-axis as $$x=4\left( t-2 \right) +a{ \left( t-2a \right)  }^{ 2 }$$ Which of the following is true?

the ground state energy of hydrogen  atom is -13.6 eV . the energy  of second excited state of $$He^{ + }$$ ion in eV is : 

Imagine an atom made up of proton and a a hypothetical particle of double the mass of the electron but having the same charge as the electron. Apply the Bohr atom model and consider all possible transitions of this hypothetical particle to the first excited level. The longest wavelength photon that will be emitted has wavelength $$\lambda $$ (give in term of the Rydberg constant R for the hydrogen atom) equal to

In Bohr series of lines of hydrogen spectrum, third line from the red end corresponds to which one of the following inner orbit jumps of electron for Bohr's orbit in atom of hydrogen