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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS (B)) (MCQs)
- The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:
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- An element X belongs to the fourth period and the fifteenth group of t...
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- Which of the following atoms has the highest first ionisation energy ?
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- Which of the following atom should have the highest negative first ele...
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- The order of electronegativities among N,C, Si and P is
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- The group having isoelectronic species is
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- Which electronic configuration will show the highest first ionization ...
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- What is the correct increasing order of ionic atomic radii in the foll...
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- Which element has the highest first ionization potential ?
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- Which of the following statements is not correct for the periodic clas...
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- the element with Z=120 (not yet discovered ) will be an /a :
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- The first ionization enthalpy of the following elements are in the ord...
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- In general, the properties that decrease and increase down a group in ...
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- The group number, number of valence electrons, and valency of an eleme...
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- The IUPAC symbol for the element with atomic number 119 would be :
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- When the first electron gain enthalpy (triangle(eg)H) of oxygen is -14...
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- The size of the iso-electronic species Cl ^(-) , Ar and Ca ^(2+) is af...
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- In comparison to B, Be has
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- The element having greatest difference between its first and second io...
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- The isoelectronic set of ions is:
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