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Color of fluorescence produced by cathode rays depends upon________________?
A. Temperature B. Pressure C. Volume D. Composition of glass Submitted by :- Jamil Ahmed
The atomic number of an element having maximum number of unpaired electrons in p-subshell is_______________?
A. 7 B. 1 C. 12 D. 16 Submitted by :- Jamil Ahmed
The letters s p d and f are used to represent which quantum numbers________________?
A. Principal B. Azimuthal C. Magnetic D. Spin Submitted by :- Jamil Ahmed
Three quantum number have been derived from equation of____________________?
A. de-Broglie B. Plancks C. Schrodinger D. Heisenberg Submitted by :- Jamil Ahmed
Splitting of spectral lines when atoms are subjected to strong electric filed is called_________________?
A. Zeeman effect B. Stark effect C. Photoelectric effect D. Compton effect Submitted by :- Jamil Ahmed
Quantum number which tells the energy of electron is________________?
A. n B. 1 C. m D. s Submitted by :- Jamil Ahmed
Wavelength of electron was verified by_________________?
A. Moseley B. Davisson and Germer C. Einstein D. Roentgen Submitted by :- Jamil Ahmed
Sommerfelds modification in Bohr’s model is_______________?
A. Orbit is cylindrical B. Orbit is elliptical C. Orbit is longitudinal D. Orbit is asymmetrical Submitted by :- Jamil…
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…
The maximum number of orbitals present in a subshell that is represented by Azimuthal quantum number = 3 will be________________?
A. 1 B. 3 C. 5 D. 7 Submitted by :- Jamil Ahmed