1.Trong các hiđrohalogenua, tính khử tăng theo thứ tự sau:

a) HF<HCl<HBr<HI

b) HCL<HI<HBR<HF

c) HF<HBR<HCL<HI

d) HI< HBr<HCL<HF

2) A

Do nguyên tử I có bán kính lớn nhất trong các halogen nên liên kết H-I là dài nhất trong các liên kết H-X của hidro halogenua \(\rightarrow\) Liên kết dễ bị phá vỡ nhất vì vùng xen phủ ở xa hạt nhân nhất\(\rightarrow\) H trong HI dễ dàng bị tách ra tạo ion H⁺. Vậy HI có tính axit mạnh nhất.

3) D

Trong nhóm halogen, flo có độ âm điện lớn nhất nên dễ dàng hút e về phía mình tạo ion F-. Vậy F2 có tính oxh lớn nhất.

hi

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óc chó 

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Bạn tham khảo :)

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có 

kb với mình nè

Oke cảm ơn !!! Tên j vậy (Trong Play Together nha! )

(x-1)\(^3\)-2=-10

=>(x-1)³=-8

=>(x-1)=-2

=>x=-1

\(( x - 1 )^2 -2 =-10\)

\(=> ( x - 1 )^2=-8\)

\(=>(x-1)^3=(-2)^3\)

\(=>x-1=-2\)

\(=>x=-1\)