Question

Electron affinity is maximum in: alkali metals , alkaline earth metals, halogens, inert gases.

Answer 1

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Ans:-. halogens

Answer 2

Electron affinity is defined as the amount of energy release or absorb when an extra electron is added to the neutral atom or molecule in the gaseous state to form a negative ion. In other words it is the change in energy of a neutral atom to form a negative ion.

On moving down in a group electron affinity decreases from top to bottom. In a period electron affinity increases from left to right. halogen have seven valence electrons in the outermost shell so electron affinity will be height in the halogen as they need only one electron to complete there octet. There is no effect of electron affinity in alkali and and alkaline earth metals. In innert gas it has zero electron affinity.