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DINESH PUBLICATION-THE P-BLOCK ELEMENTS -Questions From Board Examinations
- PH(3) has lower boiling point that NH(3). Why ?
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- Why does PCl(3) fumes in air ?
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- Which set of elements have strongest tendency to form anions ?
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- Molecular shape of SF(4), CF(4) and XeF(4) are
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- Write the balanced equation for the following chemical reaction: "Hy...
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- Write the balanced chemical equations for the following. (i)Hypophos...
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- The oxidation states exhibites by hydrogen in its various compounds ar...
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- Arrange the following acids in the decreasing order of their acid stre...
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- When the first electron gain enthalpy (triangle(eg)H) of oxygen is -14...
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- Give the formula and describe the structure of a noble gas species whi...
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- Bond angle in NH(3) is more than in PH(3). Explain.
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- NaOH gives disproportionation reaction with
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- Give one use of lichen
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- Bi(V) and Sb(V) which may be a stronger oxidizing agent and why ?
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- Sulphur vapours exhibit some paramagnetic behaviour. Explain.
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- Complete the following chemical equations : (i) P(4) (s) +NaOH (aq) ...
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- In the structure of HNO(3), why is N-O bond (121 pm) shorter than N-OH...
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- XeF(2) has linear structure and not a bent structure , Given reason .
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- Red phosphorus is less reactive than yellow phosphorus because
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- On the basis of VSEPR theory, prefict the shapes of the following mole...
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