Between boron and aluminium,boron cannot...

Between boron and aluminium,boron cannot have covalency more than 4 but AI can have.Give reason

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Sample Paper 2
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OSWAAL PUBLICATION-Sample Paper 1 -Exercise

Compared the 2nd Ionisation enthalpies and Hydration enthalpies of Alk...
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What is the chemical formula of plaster of paris?
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Between boron and aluminium,boron cannot have covalency more than 4 bu...
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Explain the reaction of diborane when it is exposed to air?
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Define limiting reagent.
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Define molarity and molality.
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CaCO3 decomposes to give CO2 gas according to the equation. CaCO3(s)...
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The atomic number and atomic mass of iron are 26 and 56 respectively....
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Calculate the wave number of the spectral line of shortest wavelength ...
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For the element with atomic number 24:Write the electronic configurati...
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For the element with atomic number 24: Write the value of n and l for ...
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For the element with atomic number 24: How many unpaired electorns are...
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State Pauli's exclusion principle. Give the possible values of l for n...
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Write three postulates of Kinetic theory of gases.
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Two gases A and B have critical temperatures as 250 and 125 K respecti...
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What is an intensive property? Give an example.
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2 mole of an ideal gas undergoes a reversible and isothermal expansion...
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State Hess's law of constant heat summation.
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Write Gibbs equation. Usding DeltaG, how do you decide whether a react...
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Define chemical equilibrium.
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