1.

Consider the following elements with their period number and valence electrons. {:("Elements","Period number","Total valence"e^(-)),(P,2,4),(Q,2,6),(R,3,7),(S,3,3),(T,3,6),(U,3,4):} According to the given informations, answer the following questions : Choose the incorrect statement :

Answer»

`SR_(3)` is a hypovalent COMPOUND
`UR_(4)` can ACT as a LEWIS acid
`PQ_(2)` can not acts as Lewis acid
`UR_(4) gt SR_(3)` : Lewis acidic CHARACTER

Solution :`SR_(3) : AlCl_(3) "" UR_(4) : SiCl_(4) "" PQ_(2) : CO_(2)` can act as Lewis acid.
Lewis acidic character of `SiCl_(4) gt AlCl_(3)`


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