✔ 最佳答案
有超多元素離子式,其中列出一d常見既離子式:
1+:H+ (hydrogen +ve ion), NH4+ (ammonium), K+ (potassium), Na+ (Sodium), Cu+ (Copper (I) ), Hg+ (mercury (I) )..........
2+:Ca2+ (calcium), Mg2+ (magnesium), Cu2+ (copper (II) ), Fe2+ (iron (II) ), Co2+ (cobalt (II) ), Zn2+ (zinc), Pb2+ (lead (II) )..........
3+:Al3+ (aluminium), Fe3+ (iron (III) )......
1-:H- (hydride), Cl- (chloride), Br- (bromide), NO3- (nitrate), NO2- (nitrite), [O2]- (superoxide)........
2-:[O]2- (oxide), [S]2- (sulphide), [SO4]2- (sulphate), [SiO2]2- (silicate)......
3-:[N]3- (nitride), [PO4]3- (phosphate)......
4-:[SiO4]4- (orthosilicate)......
以下係其中一d離子既顏色 (要有水先至有呢d顏色):
Copper (II): Blue; Cobalt(II): Pink; iron (II): green; iron(III): brown; permanganate: purple; dichromate: orange..........
最活潑既元素係Francium(鈁),佢一遇到水、酸性物質就會爆炸,產生Francium hydroxide(氫氧化鈁),並快速產生大量氫氣。
幅射係由一些結構較唔穩定既原子(如鈾、鈁及大部分人造既元素)產生出黎,分為三種:alpha、beta同gamma,而我地所指既幅射多數係指gamma射線。
2006-12-12 18:44:05 補充:
Sorry,有野修改:Francium遇到酸性物質係唔會產生francium hydroxide,係產生其他有francium ion [Fr]+ 既鹽