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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 ‘Z’ in the sequence is

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a
F
b
Br
c
I
d
Cl

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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
ctaimg

ctaimg

Similar Questions

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

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