Explain why:(1) Fluorine has lower electron affinity than chlorine.(2)

1.	Explain why:(1) Fluorine has lower electron affinity than chlorine.(2) Red phosphorus is less reactive than white phosphorus. (3) Ozone acts as a powerful oxidising agent.
Answer» F₉– 1s²2s²2p⁵ Cl₁₇ – 1s²2s²2p⁶3s²3p⁵ (1) This is because in fluorine there is strong electron- electron repulsion for the incoming electron due to the relative compact size of 2p-orbitals in fluorine as compared to 3p-orbitals in chlorine. (2) This is because of in red phosphorus, there are strong covalent bonds in P₄ molecules but in white phosphorus, there are Van der waals forces of attraction in P₄ molecules. (3) This is because O₃ molecules readily dissociates to give naseent oxygen which oxidises other substances. O₃ → O₂ + [O] Nascent oxygen

Explain why:(1) Fluorine has lower electron affinity than chlorine.(2) Red phosphorus is less reactive than white phosphorus. (3) Ozone acts as a powerful oxidising agent.

Answer»

F₉– 1s²2s²2p⁵

Cl₁₇ – 1s²2s²2p⁶3s²3p⁵

(1) This is because in fluorine there is strong electron- electron repulsion for the incoming electron due to the relative compact size of 2p-orbitals in fluorine as compared to 3p-orbitals in chlorine.

(2) This is because of in red phosphorus, there are strong covalent bonds in P₄ molecules but in white phosphorus, there are Van der waals forces of attraction in P₄ molecules.

(3) This is because O₃ molecules readily dissociates to give naseent oxygen which oxidises other substances. O₃ → O₂ + [O] Nascent oxygen

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