Iii) the energy required to remove an electron frm unipositive ion is called secnd ionizatn enrgy
it is difficult to remove an electron frm unipositive ion whn compared with neutral atom due to increase in nuclear attraction
iv) electn affinity is the property of an isolated gaseous atom .
it release energy nd is measured in kj/mole
attraction of an atom fr a single electron..
electonegativity: property of an bonded atom.
relative quantity nd hs no units
attraction of an atom for a pair of electrons.