Neutrons moving with an energy of 1.2 MeV are called_______________?
Neutrons moving with an energy of 1.2 MeV are called_______________? A. Fast neutrons B. Slow neutrons C. Moderate neutrons D. All are possible
Neutrons moving with an energy of 1.2 MeV are called_______________? A. Fast neutrons B. Slow neutrons C. Moderate neutrons D. All are possible
When 6d orbital is complete the entering electron goes into_________________? A. 7f B. 7sC. 7p D. 7d
Centrifugal forces are balanced in atom by__________________? A. Attractive forces B. Repulsive force C. Electrons D. Neutrons
_______________ can expel proteons from paraffins ? A. Electron B. PositronC. Neutron D. None of above has such capability
Quantum number which tells the energy of electron is________________? A. n B. 1 C. m D. s
Wavelength of electron was verified by_________________? A. MoseleyB. Davisson and Germer C. Einstein D. Roentgen
Sommerfelds modification in Bohrs model is_______________? A. Orbit is cylindricalB. Orbit is elliptical C. Orbit is longitudinal D. Orbit is asymmetrical
Pfund series are produced in the spectrum of hydrogen atom__________________? A. when electrons jump down to 2nd- orbit B. when electrons jump down to 3rd- orbit C. when electrons jump down to 4th- orbitD. when electrons jump down to 5th-…
The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________? A. 1 B. 3 C. 5D. 7
Rutherford bombarded _________________ particles in discovery of nucleus? A. Gamma-raysB. Alpha-rays C. Beta-rays D. X-rays