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why co2 is a gas but sio2 is a solid(c and si are same group)?

why co2 is a gas but sio2 is a solid(c and si are same group)?
 

Grade:12

14 Answers

SAI SARDAR
1700 Points
8 years ago
CO2 IS A SIMPLE LINEAR STRUCTURE , BUT SIO2 IS A POLYMERIC GIANT MOLECULE BECAUSE IT DOES NOT FORM PI BOND DUE TO LARGE ATOMIC SIZE.
Prabhakar ch
577 Points
8 years ago
IS A POLYMERIC GIANT MOLECULE BECAUSE IT DOES NOT FORM PI BOND DUE TO LARGE ATOMIC SIZE.all the best for your bright future2 IS A SIMPLE LINEAR STRUCTURE , BUT SIO2CO
RAMCHANDRARAO
159 Points
8 years ago
co2 has simple linear structure it exists as discrete molecule but sio2 has giant molecular structure it exists as polymeric structure that’s why co2 exist as gas sio2 exist as solid
Dheeru chowdary
100 Points
8 years ago
Though C & si belongs to the same group, si has more metalic charecter compare with c ,
c02 is a simple linear molecule whereas the sio2 has wide network and exists as a solid
Gaddam Chethan
317 Points
8 years ago
Hello Kumar
                   CO2 consists of individual molecules with one central carbon atom double bonded to two oxygen atoms. Silicon does not form double bonds with oxygen.
NAGOORVALI
105 Points
8 years ago
co2 is simple molecular structure at room temperature where as so2 is gaint molecular structure so it is solid
N JYOTHEESWAR
342 Points
8 years ago
hai kumar
              co2 is gas but sio2is solid because the sio2 is in giant molecular structure but the co2 is simple molecular structure.because of this reason co2 is gas but sio2 is solid.
Gowri sankar
292 Points
8 years ago
HAI KUMAR, CO2 IS GAS BUT SIO2 IS SOLID BESAUSE OF THE SIO3 IS AN GAINT MOLECULAR STRUCTURE BUT THE CO2 IS SIMPLE MOLECULAR STRUCTURE.BECAUSE OF THIS REASON CO2 IS GAS BUT SIO2 IS A SOLID
raj
383 Points
8 years ago
hellow kumar the sio2 molecule has gaint molecular structure and co2 has linear structure because of this reason the sio2 is solid and co2 is gas.
mohan
216 Points
8 years ago
dear kumar..........
              co2 is a gas due liener structure...but sio2 is a solid because of it has joit pollymoliric structure.......................................
jdflks
11 Points
6 years ago
co2 has sp hybridizae.. group four so different oxidatiion statet so thats why it is  also si has attached particles belong to other group  and carbon has different nature........................................................................................................................................................
ABHI
13 Points
6 years ago
CO2 contains 2p-2p pi bonds while SiO2 contains 3p-3p pi bonds, 3p-3p pi bonds are highly unstable so SiO2 undergoes polymerisation and becomes solid.
Manav Soni
11 Points
6 years ago
In CO2 due to smaller size of C atom stable pπ-pπ bond is formed between C and O so in CO2 all valencies of C is complete. While in SiO2 due to larger size of Si can not form stable pπ-pπ bond so SiO2 form 3D network structure due to which SiO2 exist in solid state. While in CO2 molecules are hold together through weak vander Waal`s forces.
Shakuntala poonia
14 Points
5 years ago
The size of c and o is small so, their p orbitals remains very close and form pie pie bond and acquire stability and also there is weak vander wal force present thats why CO2 is a gas.
Whereas in SiO2 the size of Si is large so it does not make pie pie bond and acquires stability by bonding with 4 Oxygen atom in 3D shape 
 

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