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Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements?
a. Nitrogen
b. Phosphorous
c. Chlorine
d. Fluorine
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Important Questions on Classification of Elements and Periodicity in Properties
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Choose the correct option regarding the following statements:
StatementNitrogen has lesser electron gain enthalpy than oxygen.
Statement Oxygen has lesser ionization enthalpy than nitrogen.
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The electronegativity of the given elements increases in the order
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The first ionization enthalpies of and can be expected to be
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How many of the following statements is/are correct?
a) Mercury is the only metal that exists as liquid at room temperature.
b) Among non-metals, carbon has the highest melting point.
c) Hydrogen is the most abundant element in the universe.
d) Oxygen is the most abundant element in the earth's crust.
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The element with maximum bond-energy
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Which of the following does not exist?
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To which group of the periodic table does an element having electronic configuration belong?
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The electron configuration of is (atomic number of )
