Which one of the following is not the mono isotopic element ?
Which of the following terms is used for the mass of chlorine 35.5 ?
Size of molecule depends upon________________?
Avogadros number may represent_________________?
The sample of isotopes of an element which needs not to be vaporized in the vaporization chamer_________________?
Which of the following ion formation is always exothermic ?
Which one is true about isotope ?
Molecular ions are formed by passing______________________?
Which of the following are isoelectronic species ?
1 a.m.u =__________________?
