板上好像都沒有人討論耶QQ 有幾個問題想請教一下各位 1. (d)According to the statement in (c), the first electron affinity for sulfur is exothermic, but the second is endothermic. Give the explanation. 想請問造成電子親和力由放熱變吸熱的原因是什麼? 有試著想用電子組態去解釋 但好像兜不出個答案來... 另外想請問同樣是1.的(b)小題,將大小次序排出來後 卻不知道是越負的值表示晶格能越大 還是負越少的代表越大 像題目給的值是-1850最大還是-3119最大? 3.The cyanate ion (OCN-) and the fulminate ion (CNO-) have the same chemical formulas but have vastly diffrernt properties. Metal salts of one of these ions are commonly used as an explosive. (b) Which ion is likely to be explosive? Explain. 想請問最不穩的是用bond order去看嗎? 負的bond order要在電負度大的原上子? 4.Given the following equation: 4NH3(g)+ 7O2(g)→ 4NO2(g)+ 6H2O(g) deltaH=-1130 kJ/mol (a) For the forward direction, do you think the entropy change of the system is positive, zero or negative? How about the entropy change of the surrounding? Explain your answers. 第一小題用係數判斷選了negative 第二小題不曉得可不可以用系統放熱表示環境吸熱 所以deltaS環境是大於零? 以上麻煩幫忙解惑>"< 感謝各位 --

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