Author: samreen
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Group VA and VIA elements Solved Exercise
Q4. Short questions i) How does nitrogen differ from other elements of its group? ii) Why does aqua regia dissolve gold and platinum? iii) Why do the elements of Group...
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Group IIIA and IVA elements Complete Exercise Solved
Q6. Why is aluminium not found as a free element? Explain the chemistry of the borax bead test. Q7. How does orthoboric acid react with: (a) Sodium hydroxide(b) Ethyl alcohol...
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Periodic Classification of Elements
Periodic classification of elements and periodicity (Solved exercise PTB) Q4:What are the improvements made in Mendeleev’s periodic table? Q5:How does the classification of elements in different blocks help in understanding...
