T
thupham22011998
Franxi
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Chưa đúng!! Nguyên tố này có 3 chữ cái!!
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Franxi
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Oxi.............................................................................
chắc là FLo rồi,hihi
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NaCl đúng ko ạ****************************???????
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Nitơ phải hok za???*********************************************************************************************************
H2O.............................. đúng không..............................
bazơ
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c2h5oh
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có phải là apatit ko ạ?????????????
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