Qualification > Sciences
ALL CIE CHEMISTRY DOUBTS HERE !!
Master_Key:
--- Quote from: red_911 on April 14, 2011, 02:42:30 pm ---• Helium has the highest first ionisation energy why not hydrogen ? ???
cause it has only one electron
--- End quote ---
Ionization energies increase from left to right. This is a trend in periodic table.
xlane:
how to find the oxidation state of the element in the hydride n chloride ?? h2S , SCl2....
Vin:
--- Quote from: xlane on April 14, 2011, 10:41:41 pm ---how to find the oxidation state of the element in the hydride n chloride ?? h2S , SCl2....
--- End quote ---
You know the oxi. state of hydrogen, i,e +1
Take oxi. state of S = x
so,
2 x (+1) + x = 0
x = -2
as oxi. state of all compounds = 0
Do the same for the other compound. Oxi. state of Cl = -1.
HUSH1994:
ON 2008 Q2,i tried it many times but its always wrong,can anyone help please?
elemis:
--- Quote from: ~~!$!HUSH!$!~~ on April 15, 2011, 05:44:11 am ---ON 2008 Q2,i tried it many times but its always wrong,can anyone help please?
--- End quote ---
Show me your workings.
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