fluorine
nitrogen
chlorine
bromine
The nuclear particles which are assumed to hold the nucleons together are
The nucleus of a hydrogen atom consists of
The nucleus of an atom consists of
The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in
The number of d-electrons in Fe2+ (Z = 26) is not equal to that of
The number of electrons presents in H+ is
The number of g-molecule of oxygen in 6.02 x 10^24 CO molecules is
The number of hydrogen bonds between guanine & cytosine in DNA is
The number of moles of solute present in 1 kg of a solvent is called its
The number of neutrons in dipositive zine ion (Zn2+, mass number 70 and atomic number 30) is
