The following equation represents which process?M(g) + e– → M–(g)second electron affinitysecond ionisation energyfirst ionisation energyfirst electron affinity

2. Which equation below represents the electron affinity for potassium?K( g ) ® K+( g ) + e-K( g ) + e- ® K-( g )K+( g ) + e- ® K( g )K-( g ) ® K( g ) + e-

The second ionisation potential of an element M is the energy required to:a.Remove 2 moles of electrons from one mole of gaseous atomsb.Remove one mole of electron from one mole of gaseous anionc.Remove one mole of electron from one mole of gaseous cation of the elementd.Remove one mole of electron from one mole of monovalent gaseous cation of the element

Electron affinity of neutral atom is equal to ionisation energy of its anion

1. What is electron affinity?

Which order of ionization energy is correctans.