Classification of Elements and Periodicity

JEE Main Chemistry · 9 questions

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• Match List - I with List - II. Choose the correct answer from the options given below:20268 April, Shift 2 · Q58
• In a period, the first ionisation enthalpy of the element at extreme left and the negative electron gain enthalpy of the extreme…20266 April, Shift 2 · Q58
• First and second ionization enthalpies of lithium are 520 kJ mol^-1 and 7297 kJ mol^-1 respectively. Energy required to convert…20266 April, Shift 1 · Q71
• Given below are two statements: Statement I: The number of pairs among [Al_2 O_3, Cr_2 O_3],[Cl_2 O_7, Mn_2 O_7],[Na_2 O, V_2…20265 April, Shift 2 · Q58
• Given below are two statements: Statement I: The correct order of electronegativity of fluorine, oxygen and nitrogen is F>O>N.…20265 April, Shift 1 · Q58
• The 1^st ionization enthalpy for Mg is +737 kJ / mol. The most probable estimated value of the 2^nd ionization enthalpy of Mg is…20264 April, Shift 2 · Q57
• A monoatomic anion ( A^- ) has 45 neutrons and 36 electrons. Atomic mass, group in the periodic table and physical state at room…20264 April, Shift 1 · Q58
• The correct set that contains all kinds (basic, acidic, amphoteric and neutral) of oxides is:20262 April, Shift 2 · Q58
• Given below are two statements: Statement (I): The first ionisation enthalpy of the elements Na, Mg, Cl and Ar follows the order…20262 April, Shift 1 · Q59