ammonia (NH4)
sodium carbonate (Na2CO3)
carbon dioxide (CO2)
explain y it is not correct to classify any of these substances as a non-metal.
thz alot ^^~
CHEMISTRY - nonmetal
2008-04-11 4:08 am
回答 (1)
2008-04-11 5:16 am
✔ 最佳答案
Elements can be divided into three classes : metals, non-metals and semi-metals.Ammonia (NH3), sodium carbonate (Na2CO3) and carbon dioxide (CO2) are all compounds, but not elements. Compounds can neither be metals, non-metals nor semi-metals.
收錄日期: 2021-04-25 19:46:15
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080410000051KK02231