how does variation of electron affinity from fluorine to sodium elements
Answers
Answer:
Electron affinity increases from fluorine to neon and decreases for sodium because as we move down to the group electron affinity decreases. Sodium is present more left in the periodic table that's why it has smaller electron affinity
Explanation:
Electron affinity increases from left to right because as we move from left to right across the periodic table electrons are added in the same shell at the same time protons are also added in the nucleus. The positive charge is going to increase and this charge is greater in effect than the charge of electrons. This effect lead to the greater nuclear attraction. The electrons are pull towards the nucleus and affinity for more electrons increases. Thus electron affinity increases from fluorine to neon and decreases for sodium because as we move down to the group electron affinity decreases. Sodium is present more left in the periodic table that's why it has smaller electron affinity.