a)
Compounds containing triply bonded silicon, Si≡Si, cannot be made under normal circumstances, but the corresponding carbon compounds (the alkynes) are common. Explain why this is so.
b)
Give an explanation for the fact that SF6 exists and is stable, but OF6 is unknown.
c)
Write a structural formula for two different isomers of [Co(H2O)2(en)2]Cl2. Indicate the oxidation state of the Co in each case.
2007-10-06 01:44:27 · 2 answers · asked by Hammad A 1 in Science & Mathematics ➔ Chemistry
a)becoz si is very big in comparison with carbon.Hence silicon requirs more energy to make triple bond whereas carbon is very small so it doesnt require much energy to from tripple bond
b)SF6 exist but OF6 doesnt exist becoz both oxygen and flouroine are highly electro negative elemnts hence it's very difficult to form compounds with very high electronegative values. Sulphur has low value of electronegativity wen compared wid Flourine.
c) oxidation state of Co is +2
2007-10-06 01:57:15 · answer #1 · answered by harsh_mkg 3 · 1⤊ 0⤋
You need to look at the following ideas.
a. Only small atoms in Period 2 can form triple bonds
b. O can't expand its valency octet
c. There are, in fact, three isomers. Cis + enantiomer, and trans. Both ligands are neutral.
Now you can work out your own answers.
2007-10-06 08:58:19 · answer #2 · answered by Gervald F 7 · 0⤊ 0⤋