Which is least stable PbI4?

PbI4 is the least stable. It is due to inert pair effect, the stable oxidation state of lead is +2 because of which only +2 oxidation state compounds of Pb exists.

Which of the following is a least stable?

Thus, CH3CH2+CH2 being 1∘ cation is the least stable.

Which halide is stable and has doubtful existence?

Due to strong inert pair effect , Pb2+ is more stable tha Pb4+ . Non-existence of Pb4 can be explained on the basis of strong oxdising nature of Pb4+ . The iodide ions are preducing angents .

Why pbcl4 is less stable than pbcl2?

Due to poor shielding of 6s2 electrons by inner d and f electrons, it is difficult to remove 6s2 electrons (inert pair). Thus, due to inert pair effect, the +2 oxidation state is more stable than +4 oxidation state. Hence, PbCl4 is less stable than PbCl2.

Which of the following is least stable and has doubtful existence?

Solution: As we go down the group the stability of halides will decrease due to increase in size of halogen atom,because of this reason the halogens easily disassociates from the compound,so lead iodide is least stable among the halides of 14th group elements.

Why is PbI4 unstable?

PbI4 does not exist because the iodine reduces the lead to Pb(II) and the Pb oxidizes the iodine to iodine(I2). Since the iodine is not a strong reducuing agent to reduce Pb(II) to Pb, the compound Pbl2 is formed.

Which of the following is least stable Mcq?

Which of the following is least stable? Explanation: Eclipsed conformation is the least stable due to its high torsional energy.

Which of the following is least stable resonance structure?

Structure
Structure (3) is the least stable resonance structure because like charges (+ve) are carried by the adjacent atoms. Repulsion between them lands to increase of energy. Structure (4) is not the acceptable resonating structure as N atom has more than 8e- in its valence shell which is not possible.

Which of the following halide is most stable?

Solution: Stability of carbon tetrahalides decreases with increase in the size of halogen atom. So, CF4 is the most stable halide among the given options.

Which is more stable PbCl2 or pbf2?

In Pbcl2, the temperature is low as compared to pbf2 in which density, as well as temperature, is high. Even in term of thermal expansion, pbcl2 is high than pbf2.

Why PbCl4 is more covalent than PbCl2?

Pbcl4 is more covalent then pbcl2 because the size of state of pbcl2 is larger then pbcl4. Smaller the size of cation more is its polirizing power. And more covalent is the compound.