`O^(19)` `:-` `F^(19)` + e + v
In this decay , the rest mass energy of `O^(19)` and `F^(19)` are 17692.33 MeV and 17687.51 MeV respectively . The Q factor of the dacay is

Which of the following has more electrons than neutrons? (Mass number of Al, C, O and F is 27, 12, 16 and 19 respectively)

Determine the mass of 1 F-atom in gramm (F-19).

19 gm of ice is converted into water at 0^(@)C and 1 atm. The entropies of H_(2)O(s) and H_(2)O(l) are 38.2 and 60 J//"mol " K respectively. The enthalpy change for this conversion is :

19 gm of ice is converted into water at 0^(@)C and 1 atm. The entropies of H_(2)O(s) and H_(2)O(l) are 38.2 and 60 J//"mol " K respectively. The enthalpy change for this conversion is :

19 gm of ice is converted into water at 0^(@)C and 1 atm. The entropies of H_(2)O(s) and H_(2)O(l) are 38.2 and 60 J//"mol " K respectively. The enthalpy change for this conversion is :

The atomic mass of F^(19) is 18.9984 m_(u) . If the masses of proton and neutron are 1.0078 m_(u) and .0087 m_(u) . Respectively, calculate the binding energy per nucleon (ignore the mass of electrons). (1 m_(u) = 931) MeV)

The atomic mass of F^(19) is 18.9984 m_(u) . If the masses of proton and neutron are 1.0078 m_(u) and .0087 m_(u) . Respectively, calculate the binding energy per nucleon (ignore the mass of electrons). (1 m_(u) = 931) MeV)

The ionisation energy of He^(o+) is 19.6 xx 10^(-18) J per atom .The energy of the first stationary state of Li^(2+) will be