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20号元素的离子符号,Dearfriendsoutsidetoogladtomakefriendswithyou!Ihopetoreceiveyourletter,Ihopewelongtowrite
题目内容：
20号元素的离子符号,
Dear friends outside too glad to make friends with you!
I hope to receive your letter,I hope we long to write from,right?‘
把图也要化出来优质解答
一楼怎么H带负价?楼主我给个口决吧：1价H.Li.K.Na.Ag,2价O.Mg.Ca.Ba.Zn.3Al.4si.5价P.金属易被氧化一般正价非金属反之 23铁24碳17氯35氮硫价常有246铜汞12也都有（例23铁意为铁是变价有2和3价
Dear friends outside too glad to make friends with you!
I hope to receive your letter,I hope we long to write from,right?‘
把图也要化出来
优质解答
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