简单阳离子的外围电子排布式怎么写

2025年04月06日 21:02
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网友(1):

由元素在周期表中位置,可知a为h、b为c、c为n、d为o、e为mg、f为al、g为s、h为co、i为ni.
(1)h为co,外围电子排布式为:3d74s2,失去4s能级2个电子及3d能级2个电子层形成四价阳离子,四价阳离子的外围电子排布式为:3d5,故答案为:3d5;
(2)n元素原子2pn容纳3个电子,处于半满稳定状态,能量较低,第一电离能高于同周期相邻元素,mg元素原子2s能级容纳2个电子,为全满稳定状态,第一电离能高于同周期相邻元素,非金属性元素第一电离能高于金属元素,故第一电离能al<mg<o<n,故答案为:al<mg<o<n;
(3)邻甲基苯甲醛的分子中甲基中c原子成4个σ键数,采取sp3杂化,苯环上及-cho中c原子成3个σ键数,采取sp2杂化;苯甲醛分子中高于6个c-h、7个c-c、1个c=o,共有14个σ键数,故1mol 苯甲醛分子中含有σ键的数目为14na,故答案为:sp2 和sp3;14na;
(4)元素d与e形成的化合物为mgo,属于离子化合物,晶体的晶格能较大,熔点很高,常用耐火材料,故答案为:耐火;晶体的晶格能较大;
(5)表中有关元素形成的一种离子和单质o3互为等电子体,则该离子的化学式为no2-,故答案为:no2-;
(6)晶胞中la原子数目=2×
1
2
+12×
1
6
=3,ni原子数目=12×
1
2
+6×
1
2
+6=15,故晶体中la、ni原子数目之比=3:15=1:5,则该晶体的化学式为:lani5,故答案为:lani5.

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