Group VA Group VlA Elements
In this post, I am sharing the Class 12 Chemistry Notes Chapter 5 Short Questions PDF for the students of FSC 2nd Year. The name of this chapter is Group VA Group VlA Elements. Students can download the 12th Chemistry Chapter 5 Short Questions Notes in PDF format on their laptops or mobile. These Chemistry Notes are for the FSC Part 2 students of all boards working under the Punjab Board like Gujranwala Board, Lahore Board, Faisalabad Board, Multan Board, Rawalpindi Board, Sargodha Board, DG Khan Board, and Sahiwal Board. Here are the complete FSC 2nd Year Chemistry Notes PDFs of all chapters.
Why iodine has metallic luster?.
Iodine has big size due to which its outermost shell electrons can easily excite on absorption of energy and on de-excitation release energy which is seen in the form of metallic luster.
Give peculiar behaviour of fluorine?
Due to the small size of the F atom, there will be a better overlap of orbits and consequently leads to shorter and stronger bonds with elements other than O, N, and itself Ionic fluorides have higher lattice energies than the other halides and these values are responsible for the insolubility of the fluorides of Ca, Mg, Ba, Sr and lanthanides in water. Due to the low dissociation energy of fluorine molecules, it is highly reactive. The other halogens react slowly under similar conditions. The fluorides are, however, more stable with respect to dissociation into elements. Due to the restriction of valence shell to an octer many fluoro compounds show inertness. CF4 and SF6. Also due to this restriction, fluorine remains restricted to 1 oxidation state. Fluorine is the only element that combines directly with noble gases like Kr, Xc, and Rn forming their fluorides.
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Relevant Notes:
- 12th Class Chemistry Chapter 5 Notes
- 12th Class Chemistry Chapter 4 Short Questions
- 12th Class Chemistry Chapter 4 Solved Exercise
