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AAKASH SERIES-PERIODIC TABLE-QUESTIONS FOR DESCRIPTIVE ANSWERS
- Both ionisation enthalpy and electron gain enthalpy have some irregula...
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- With reference to the periodic table, name the following : (a) the h...
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- Mention different chemical criteria to call an element as metal.
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- How do you account for the highly electro-positive nature of alkali me...
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- What are anhydrides? Write exmples of acidic and basic anhydrides.
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- Alkali metals are good reductants and halogens are good oxidants. Why?
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- Comment on the following : (a) vertical relationship of elements, (b...
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- How many periods are needed to accommodate all elements up to Z value ...
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- How is polarisation power useful in explaining the diagonal relationsh...
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- I1 and I2 of an element are 700 and 1200 kJmol""^- If 1000 kJ "mol"^(-...
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- The energy required for the following process is 1.96 xx 104" kJ mol"^...
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- Compare the ionisation potentials of He and He^(+). Account for the di...
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- Bond energies of H2, F2 and HF are respec tively 104.2, 36.6 and 134.6...
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- Ionisation enthalpy of chlorine is "13 eV atom"^(-1) Electron gain ent...
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- Be forms Be^(2+) and Al^(3+) forms Al^(3+). If the radii of Be^(2+) an...
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- Among F((g))^(-),Cl((g))^(-0),Br((g))^(-) and I((g))^(-), which one r...
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- Among Li(g), Cs(g), Cl(g) and Cl((g))^(-) which one requires the leas...
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- If we assumed that each orbital can accomidate three electrons, then c...
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- An element with the electronic configuration [Xe] 6s^(2)4f^(14)5d^(1) ...
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- Calculate the IP(3) of lithium.
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