Which of the following elements is NOT a p-block element?
A. Gallium
B. Bismuth
C. Tin
D. Zinc
Answer: Option D
Solution (By JKExamLibrary)
The p-block includes elements from groups 13 to 18. Gallium (Group 13), Tin (Group 14), and Bismuth (Group 15) are all p-block elements. Zinc (Group 12) has a completely filled d-subshell (3d10) in its ground state and common oxidation states, placing it in the d-block.
Explanation:
Haematite (Fe₂O₃) is a major ore of iron. Bauxite is aluminium ore, galena is lead sulfide, cinnabar is mercury sulfide. Magnetite (Fe₃O₄) is another iron ore.
Explanation:
Ammonia reacts with CO₂ to form urea, and with HNO₃ to form ammonium nitrate, both key nitrogenous fertilizers. Glass uses Na₂CO₃; cement uses CaCO₃/clay; soap uses NaOH.
No comments yet. Be the first to start the discussion!