Chemical Bonding(1 question)
There is a statement:
An ionic compound is formed only between metals and non-metals
Q:Why is it wrong ?哪semi-metals 是什麼Bond,也可以是 ionic bond嗎?
- 匿名8 年前最愛解答
A typical example would be ammonium compounds, e.g. ammonium chloride, ammonium sulphate, ammonium carbonate.
Ammonium ion (NH4+) is composed of 1 nitrogen atom forming 4 covalent bonds with 4 hydrogen atoms. All of its constituent elements are non-metals. therefore, the statement is wrong.
for semi-metals, they usually form covalent bonds and rarely form ions.
2012-06-10 14:44:12 補充：
semi-metals are quite unusual. they have non-octet structures in their compounds, e.g. BF3.資料來源： Victor, Victor
- 8 年前
大部份ionic compound都係between metals & non-metals
一d compound如ammonium chloride(NH4Cl)係stable compound而佢係由cation(e.g. NH4+) & anion(e.g Cl-)組成的,但佢全部由non-metals組成