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Na 嘅 flame test 出 yellow
Ca 嘅flame test 出 brick red
Mg 嘅flame test 出 shiney white
但mg 的 e- 照常理會emit radiation in form of light(discrete line) and back to ground state after excitation,出黎嘅colour 應該係某一色(e.g. calcium出brick red),唔應該會係白光。假如係白光,咪即係continous spectrum,即係mg嘅 e-可以去哂所有energy level? 又好似冇可能=.=
一條extra的問題:假如flame test 做得耐,例如係咁燒舊 sodium,會唔會愈燒colour愈唔明顯。假如係,係咪因Na-->NaO 每粒sodium少左兩粒electron to promote,所以少左兩粒electron reemit energy~? |
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