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Q.
$SiF _{4}$ gets hydrolysed giving
ManipalManipal 2019
Solution:
$SiF _{4}+4 H _{2} O \rightarrow Si ( OH )_{4}+4 HCl$
The trend towards hydrolysis decreases down the group. Silicon have vacant orbital to which water molecules can co-ordinate and hence their halides are hydrolysed by water.