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T,B,Z and Q are 17th group elements of Modern periodic table. The correct trend of acidic strength of their hydrides is HT > HB > HZ > HQ. The element ‘T’ in the sequence is

a
Cl
b
F
c
Br
d
I

detailed solution

Correct option is D

Down the group as the size of the atom increases affinity of hydrogen towards central atom decreases. Thereforea) X-H bond enthalpy decreases….HF>HCl>HBr>HI ;b) Thermal stability decreases…..HF>HCl>HBr>HI ;c) Reducing power increases…..HFHCl>HBr>HI ;Down the group as vanderwaal's forces increasesMelting and boiling points increasesExpected BP and MP….HF

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Similar Questions

Down the group the acidic character of HX in 17th group increases HF<HCl<HBr<HI because:


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