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Oxidation states and inert pair effect

27 questions on Oxidation states and inert pair effect from the Periodic Table and Periodicity chapter: 6 NEET level, 11 JEE Main, 10 JEE Advanced. Each one opens with its answer and solution.

Practice this topic All Periodic Table and Periodicity topics

Which of the following oxidation state assignments is/are correct? JEE Main level
Which of the following halides is least likely to exist? JEE Main level
The oxidation states of nitrogen in N2H4, NH2OH, N2O and NO2- increase in the order JEE Main level
Thallium triiodide, formulated as TlI3, is found to be isostructural with CsI3 and gives Tl+ and I3- on analysis. The best conclusion is that JEE Advanced level
Which of the following will oxidise Mn^2+ to MnO4- in acidic solution? JEE Main level
Which statement about the pentahalides of group 15 is correct? JEE Advanced level
Which element of group 15 shows +3 as its predominant oxidation state, being much more stable than +5? NEET level
The maximum oxidation state shown by sulfur in its compounds is NEET level
Which of the following statements about lead is/are correct? JEE Advanced level
Which of the following is the best oxidising agent in aqueous solution, owing to the stability of the lower oxidation state of the metal? JEE Main level
Which of the following statements about group 13 elements is/are correct? JEE Advanced level
The sum of the oxidation numbers of oxygen in OF2, H2O2, KO2 and Na2O (one oxygen atom considered in each) is JEE Advanced level
Red lead Pb3O4 reacts with hot dilute HNO3 as Pb3O4 + 4HNO3 -> 2Pb(NO3)2 + PbO2 + 2H2O. Which of the following is correct? JEE Advanced level
Excess aqueous HgCl2 is added to a small amount of SnCl2 solution. The white precipitate formed is Hg2Cl2. Which of the following describes the oxidation-state ... JEE Advanced level
Which of the following statements regarding the inert pair effect is/are correct? JEE Main level
Which of the following oxidation state assignments is/are correct? JEE Advanced level
Which one of the following lead compounds is the more stable? NEET level
In acidic solution, bismuthate oxidises manganese(II) according to 2Mn^2+ + 5BiO3- + 14H+ -> 2MnO4- + 5Bi^3+ + 7H2O. The number of moles of NaBiO3 required to o... JEE Advanced level
Oxygen does not show the oxidation states +4 and +6 found for the other members of group 16 because JEE Main level
The inert pair effect refers to the reluctance of which electrons to take part in bonding in heavier p-block elements? NEET level
In which of the following does the element show a maximum oxidation state equal to the total number of its valence electrons (ns plus (n-1)d)? JEE Main level
Which of the following correctly lists the divalent ions of group 14 in increasing order of reducing power? JEE Advanced level
In which pair is the central atom present in the same oxidation state in both species? JEE Main level
Which is the most stable oxidation state of thallium? NEET level
Gallium dichloride, GaCl2, is diamagnetic. This is best explained by describing it as JEE Main level
Fluorine shows only the oxidation state -1 in its compounds (apart from the elemental state). This is mainly because fluorine NEET level
Which of the following dioxides is the strongest oxidising agent? JEE Main level