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The P-Block Elements

Question

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Which of the following statements is not true for halogens?

All form monobasic oxyacids

All are oxidizing agents

Chlorine has the highest electron-gain enthalpy

All but fluorine show positive oxidation states

Solution

D.

All but fluorine show positive oxidation states

Due to high electronegativity and small size, F forms only one oxoacid, HOF known as Fluoric (I) acid the oxidation number of F is +1 in HOF.

Some More Questions From The p-Block Elements Chapter

Bond angle in PH₄⁺ is higher than that in PH₃. Why?

Write a balanced equation for the hydrolytic reactions PCl₅ in heavy water.

What is the basicity of H₃PO₄?

What happens when H₃PO₃ is heated?

List the important source of sulphur.

Write the order of thermal stability of the hydrides of Group 16 elements.

Why is H₂O a liquid and H₂S a gas?

Which of the following does not react with oxygen directly?
Zn, Ti, Pt, Fe

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