Classification of Elements and Periodicity in Properties questions
826 published questions with worked solutions.
- When the first electron gain enthalpy ( _ eg H) of oxygen is −141 kJ/mol, its second electron gain enthalpy is:
- In general, the properties that decrease and increase down a group in the periodic table, respectively, are:
- The correct order of atomic radii is:
- The element with Z = 120 (not yet discovered) will be an/a:
- The correct option with respect to the Pauling electronegativity values of the elements is:
- The correct order of the atomic radii of C, Cs, Al, and S is:
- The electronegativity of aluminium is similar to:
- The pair that has similar atomic radii is:
- In comparison to boron, beryllium has:
- Within each pair of element F & Cl, S & Se, and Li & Na, respectively, the elements that release more energy upon and electron...
- The first and second ionisation enthalpies of a metal are 496 and 4560 kJ mol ^ -1 , respectively. How many moles of HCl and...
- B has a smaller first ionization enthalpy than Be. Consider the following statements: (i) it is easier to remove 2p electron than...
- Among the statements (I – IV), the correct ones are : (I) Be has smaller atomic radius compared to Mg. (II) Be has higher...
- The five successive ionization enthalpies of an element are 800, 2427, 3658, 25024 and 32824 kJ mol ^ -1 . The number of valence...
- Given below are two statements: Statement (I): Both metals and non-metals exist in p and d-block elements Statement (II):...
- The transition metal having highest 3rd ionization enthalpy is:
- In case of isoelectronic species the size of F^-, Ne and Na^+ is affected by:
- The correct order of the first ionization enthalpy is
- Given below are two statements: Statement I: The correct order of first ionization enthalpy values of Li, Na, F and Cl is Na < Li...
- The correct order of first ionization enthalpy values of the following elements is: (A) O (B) N (C) Be (D) F (E) B Choose the...
Other chapters
Alcohols, Phenols and EthersAldehydes, Ketones and Carboxylic AcidsAlternating CurrentAminesAnatomy of Flowering PlantsAncient Indian HistoryAnimal KingdomApplication of DerivativesArea Under CurveAromatic Compounds and Aryl HalidesAtomsBasic Mathematics and LogarithmBinomial TheoremBiodiversity and ConservationBiological ClassificationBiomoleculesBiotechnology and Its ApplicationsBiotechnology: Principles and ProcessesBody Fluids and CirculationBreathing and Exchange of GasesCell Cycle and Cell DivisionCell: The Unit of LifeChemical Bonding and Molecular StructureChemical Coordination and Integration