Which among the following is a false statement ?
Which among the following is a false statement ?
Option 1 -
SiO₂ has a structure similar to that of CO₂
Option 2 -
Natural Si exists only in the combined state
Option 3 -
Si can be prepared by reducing SiO₂ with Mg
Option 4 -
Si does not exist in graphite-like structure, but exists only in diamond like structure
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1 Answer
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Correct Option - 1
Detailed Solution:(A) SiO? has three-dimensional network structure of Si – O bonds; while carbon dioxide consists of discrete CO? molecules. SiO? is solid, whereas CO? is a gas
(B) Because of its great affinity for oxygen, Si always occurs as the oxide, silica (SiO? ) or in the form of silicates, which are the compounds of SiO? with other metal oxides.
(C) SiO? + 2Mg → Si + 2MgO
(D) The reluctance of silicon to form pπ – pπ bonds to itself is clearly shown by the fact that silicon does not exist in graphite-like structure, but only in diamond like structure.
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