Related InterviewSolutions

• Which of the following isoelectronic species has the largest radius?
• Which one of the following sets of ions represents the collection of isoelectronic species?A. `Na^(+),Mg^(2+),Al^(3+),Cl^(-)`B. `Na^(+),Ca^(2+),Sc^(3+),F^(-)`C. `K^(+),Cl^(-),Mg^(2+),Sc^(3+)`D. `K^(+),Ca^(2+),Sc^(3-),Cl^(-)`
• In which of the following arrangements, the sequence is not strictly according to the property written against it ?A. `CO_(2)ltSiO_(2)ltSnO_(2)ltPbO_(2)` : increasing oxidising powerB. `BltCltOltN : ` increasing first ionisation enthalpyC. `NH_(3)ltPH_(3)ltAsH_(3)ltSbH_(3)`: increasing basic strengthD. `HFltHClltHBrltHI` : increasing acid strength
• Which one is not correct order of electro negativity.A. F `gt` Cl`gt` Br`gt` IB. Si`gt` Al `gt` Mg`gt` NaC. Cl`gt` S `gt` P `gt` SiD. None of these
• Which of the following has maximum number of unpaired electron (atomic number of `Fe 26`)A. FeB. Fe (II)C. Fe (Ill)D. Fe (IV)
• The size of the following species increases in the orderA. `Mg^(2+)ltNa^(+)ltF^(-)`B. `F^(-)ltNa^(+)ltMg^(2+)`C. `MgltF^(-)ltNa^(+)`D. `Na^(+)ltF^(-)ltMg^(2+)`
• Select the correct statement(s).A. The value of electron gain enthalpy of an element can be -ve or +ve.B. In the periodic table, metallic character of the elements increases down the group and decreases across the periodC. The `Cl^(-) & S^(2-)` are isoelectronic species but first one is not smaller in size than the secondD. Ionization enthalpy of an atom is equal to electron gain enthalpy of cation
• Highest size will be ofA. `Br^(-)`B. `I`C. `I^(-)`D. `I^(+)`
• Which of the following is correct order of EA.A. N `lt` C `lt` O `lt` FB. F `gt` Cl`gt` Br`gt` IC. Cl `gt` F `gt` Br `gt` lD. C`lt`N`lt`O`lt`F
• Element Cu has two oxidation states `Cu^(+1)` & `Cu^(+2)` the right order of radii of these ions.A. `Cu^(+1)gtCu^(+2)`B. `Cu^(+2)gtCu^(+1)`C. `Cu^(+1)=Cu^(+2)`D. `Cu^(+2)geCu^(+1)`