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Q.

Two tetravalent elements A and B form dioxides. Both react with NaOH to form similar salts. ∠OAO is 180∘. OBO is 109∘281. Both are acidic in nature. Then, A and B are respectively

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a

C and S

b

S and Si

c

C and Si

d

Si and C

answer is C.

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Detailed Solution

mathop Climits_A + {O_2}xrightarrow{Delta }C{O_2}xrightarrow{{2NaOH}}mathop {N{a_2}C{O_3}}limits_{salt} + {H_2}O

 

 

CO2 Lewis Structure, Molecular Geometry and Hybridization

 

 

 

 

 

mathop {Si}limits_B + {O_2}xrightarrow{Delta }Si{O_2}xrightarrow{{2NaOH}}mathop {N{a_2}Si{O_3}}limits_{Waterglass} + {H_2}O

 

 

What is the hybridization of SiO4 4-? - Quora
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