If the ionisation potential is `IP`, electron affinity is `EA` and electronegative is `X`, which of the following relation is correct?

Define ionisation enthalpy and electron affinity.

For electron affinity of halogens, which of the following is correct?

For electron affinity of halongens which of the following is correct

Let electronegativity, ionisation energy and electron affinity be represented as EN, IP and EA respectively. Which one of the following equation is correct according to Mulliken?

Let electronegativity, ionisation energy and electron affinity be represented as En, Ip and EA respectively. Which one of the following equation is correct according to Mulliken?

Let electronegativity, ionisation energy and electron affinity by represented as EN, IP and EA respectively. Which one of the following equation is correct according to Mulliken ?

Give differences between electron affinity and electronegativity.

Explain the trends in ionisation potential, electron affinity, electronegativity and metallic nature of halogens.