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NARAYNA-PERIODIC TABLE -All Questions
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- An element has nine positive charges in its nucleus its common oxidati...
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- The tendency if an element to lose an electron is called
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- Oxide that is most acidic
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- Three elements, X, Y and Z belong to the same period. Their oxides are...
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- The elements 'X', 'Y' and 'Z' form oxides which are acidic, basic and ...
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- Chemical similarity between Be and Al is due to
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- Pair of ions with polarising power
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- Four elements P,Q,R & S have ground state electronic configuration as:...
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- The strength of an oxyacid E(OH)(n) , where E is the central atom , de...
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- Consider the following ionization energies for a metal M M((g)) rar...
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- In general , the configuration of lanthanides in (n-2) f^(1-14) (n-1) ...
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- An increase in both atomic and ionic radii with atomic number occurs i...
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- Mercury is the only metal which is liquid at 0^(@) C . This is due to...
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- Arrange the following ions in order of their inceasing radii : Na^(+) ...
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- Which is the correct order of ionisation energies ?
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- Fluorine was discovered very late because of its high reactivity . It ...
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- Which of the following is correct
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- Aqueous solution of two compounds M(1) - O - H and M(2) - O - H are pr...
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