NaCl gives ppt with `AgNO_3` but `CCl_4` does not. - Explain.

BeCl_2 fumes in moist air but BaCl_4 does not. Explain.

Li_2CO_3 decomposes on heating to give CO_2 but Na_2CO_3 does not decompose .Explain why?

Why BF_6^(3-) does not exist, explain.

Explain why atomic radius of Ga is less than that of Al? AlCI_3 forms .dimer but BCl_3 does not - Explain? What is corrundum?

C Cl_4 does not give white precipitate while NaCI solution does with AgNO_3 solution— Explain why.

CoSO_(4)Cl.5NH_(3) exists in two isomeric forms 'A' and 'B'. Isomer 'A' reacts with AgNO_(3) to give white precipitate, but does not react with BaCl_(2) . Isomer 'B' gives white precipitate with BaCl_(2) but does not react with AgNO_(3) . Answer the following questions. (i) Identify 'A' & 'B' and write their structural formulas. (ii) Name the type of isomerism involved. (iii) Give the IUPAC name of 'A' and 'B'.

Explain why PbI_4 does not exist.

When F does not give precipitation with AgNO_3 soln? Which one has higher-lattice energy KF & KI.

An element which was burnt in limited supply of air to give oxide A which on treatment with water gives an acid. B. Acid B on heating gives acid C which gives yellow precipitate with AgNO_3 solution A is