To answer this you really need to have at your finger tips all of the properties of Cl2 and I2. I think the answer is B. Here is my reasoning.
For A. Ksp for AgCl is approx 10^-10 vs AgI approx 10^-17. The formation constant for Ag(NH3)2 is about 10^7. Since AgCl is more soluble than AgI because of Ksp, then AgCl should be MORE soluble in NH3 than AgI. A says less so I eliminated A. For B, AgI is a larger molecule (in size) than AgCl; therefore, it is more polarizable so AgCl is smaller and that's what B says. For C, HCl vs HI. HCl is a gas, HI is gas. The thermal stability is a function of the strength of the H-Cl or H-I bond. HI is a larger bond length and a weaker bond so HCl is MORE (not less) stable. Eliminate C. For D,
it is 1st year chemistry class that Cl2 is a far better oxidizing agent than I2 so eliminate D. I still go with B.
Properties of chlorine, iodine and their compounds are compared.
Property Q for chlorine is smaller than for iodine.
What is property Q?A.solubility of the silver halide in NH3 (aq)B.
strength of van der Waals’ forces between the molecules of the element
C.
thermal stability of the hydrogen halide
D.
oxidising ability of the element
2 answers
B