1 a.m.u =__________________? April 15, 2025 by admin A. 1.6 x 10-27 kg B. 1.6 x 10-24 kg C. 1.6 x 10-26 kg D. 1.6 x 10-28 kg
Which of the following are isoelectronic species ? April 15, 2025 by admin A. H+ H H- B. Li+ Na+ K+ C. C1- Br- I D. F- Ne Na+
Molecular ions are formed by passing______________________? April 15, 2025 by admin A. High energy electron beam B. ? – particle C. X-rays D. All of the above
Which one is true about isotope ? April 15, 2025 by admin A. Same number of neutrons B. Same mass number C. Same physical properties D. Same chemical properties
Which of the following ion formation is always exothermic ? April 15, 2025 by admin A. Uni-negative B. Uni-positive C. Di-negative D. Di-positive
The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________? April 15, 2025 by admin A. Gas B. Liquid C. Volatile solid D. All
Avogadros number may represent_________________? April 15, 2025 by admin A. volume of particles B. number of particles C. mass of particles D. All of the above
Size of molecule depends upon________________? April 15, 2025 by admin A. Atomicity B. Shape of molecule C. Both A and B D. Difficult to predict
Which of the following terms is used for the mass of chlorine 35.5 ? April 15, 2025 by admin A. relative atomic mass B. mass number C. atomic weight D. relative isotopic mass
Which one of the following is not the mono isotopic element ? April 15, 2025 by admin A. arsenic B. uranium C. iodine D. nickel
