F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. F2 has least dissociation enthalpy because of presence of lone pair lone pair repulsion. but bond length has no relation with lone pair of electrons. smaller the size of atom smaller will be bond length. A projectile have initial velocity 20 m/s making an angle of 30° with vertical. When it makes 45° with vertical in upward journey then speed becomes?