A. Angular momentum of electrons in multiples of h/2?
B. Electrons revolve in discrete circular orbits
C. Energy of each electron is directly proportional to n2
D. Electrons radiate energy continuously in a given orbit.
Related Mcqs:
- All the following variables are used to describle gases except__________________?
A. pressure
B. volume
C. moles
D. density - When an atom absorbs energy the lines in the spectrum will appear which are_________________?
A. Brighter
B. Darker
C. Colourless
D. Hard to locate - Splitting of spectral lines when atom is subjected to magnetic field is called _______________?
A. Zeemans effect
B. Starks effect
C. Photo electric effect
D. Compton effect - 2nd orbit is ___________ away from nucleus of H-atom as compared to 1st orbit is ?
A. 2-times
B. 3-times
C. 4-times
D. 6 times - Atom with higher atomic number produces X-rays of__________________?
A. Shorter wavelength
B. Larger wavelength
C. X-ray not produced
D. All are possible - Atom cannot be divided into simple unitstheorized by________________?
A. Rutherford
B. Dalton
C. Bohr
D. Schrodinger - The number of fundamental particles in an atom of the lightest isotope carbon are_______________?
A. 6
B. 12
C. 18
D. 20 - Centrifugal forces are balanced in atom by__________________?
A. Attractive forces
B. Repulsive force
C. Electrons
D. Neutrons - Oxidation state of an atom represents____________________?
A. Number of electrons gained
B. Number of electrons lost
C. Apparent charge in compound
D. Its vacancies - Sum of protons and neutrons in an atom gives off _________ ?
A. Nucleon numbera
B. Mass number
C. Atomic number
D. Both A and BSubmitted by: Rashid Mehmood
