Author: samreen

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...

By samreen September 17, 2024 2nd Year Chemistry
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...

By samreen September 15, 2024 2nd Year Chemistry
s block elements- Solve Exercise (Punjab Boards)

Q4 (a):Names, electronic configurations, and occurrence of s-block elements: (b):Peculiar behavior of lithium with respect to other alkali metals: Q5:Trends in the chemical properties of oxides, hydroxides, carbonates, nitrates, and...

By samreen September 15, 2024 1st year Chemistry

Periodic Classification of Elements