Question

explain why the second electron affinity value of element are negative yet stable oxides and sulphides are formed ​

Answer 1

Answer:

Here is your answer

Explanation:

When we add second electron we need to supply energy to oxygen anion because of electron-electron repulsion. Hence endothermic. As oxygen gets octet if it accepts 2 electrons and due to small size it is second more electronegative atom.

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