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Q. Which of the following product is formed when $SiF_4$ reacts with water?

The p-Block Elements

Solution:

In reaction with water, $SiF_4$ (like $SiCl_4$) gets hydrolysed to form $H_4SiO_4$ (silicic acid).
$SiF_4 + 4H_2O \rightarrow \underset{\text{ (Silicic acid)}}{ Si(OH)_4 \, or \, H_4SiO_4 } + 4HF$