periodic

1. (Sr): Gives bright red to fireworks and used in CRT screens.
3. (Se): Used in solar panels and photocells.
7. (As): Historically used in pesticides; now studied in semiconductor research.
9. (Be): Used in aerospace-grade alloys for high strength and light weight.
10. (P): Vital in DNA, fertilizers, and matchsticks.
11. (S): Used in rubber, gunpowder, and medicines.
14. (B): Adds durability to borosilicate glass and detergents.
15. (N): 78% of air, essential in fertilizers and proteins.
20. (Cu): Excellent electrical conductor for wiring and plumbing.
22. (Ga): Found in semiconductors and blue-violet laser diodes.
23. (Ca): Builds bones and used in cement, cheese, plaster.
27. (Rb): Used in atomic clocks for precise timing.
28. (Ar): In light bulbs, welding applications, thermal insulation.
30. (Y): Adds strength to alloys and used in LEDs/phosphors.
32. (Ne): Illumines neon signs and high-voltage indicators.
34. (Na): In table salt, soap, and used as nuclear reactor coolant.
35. (Cl): Keeps swimming pools clean and makes PVC plastic.
38. (F): Reacts in toothpaste and Teflon coatings.
39. (C): Foundation of all life, present in fuels, diamonds, graphite.

2. (Mg): Light alloy used in firework pigments and plant chlorophyll.
4. (Br): Employed in flame retardants and photographic chemicals.
5. (V): Strengthens steel for tools and engines.
6. (Si): Key in semiconductors, glass, and concrete.
8. (Li): Powers rechargeable batteries in electronics and EVs.
11. (Sc): Enhances strength of aerospace aluminum alloys.
12. (Fe): Heart of steel production and blood hemoglobin.
13. (Zr): Corrosion-resistant metal used in nuclear reactor components.
16. (Ge): Semiconductor used in fiber optics and infrared tech.
17. (Co): Used in superalloys, batteries, blue pigments.
18. (Zn): Galvanizes steel to prevent rust; plays roles in enzymes.
19. (Ni): In coins, stainless steel, and rechargeable batteries.
21. (K): Nutrient in fertilizers and soap.
24. (Mn): Used in steelmaking and battery cathodes.
25. (O): Essential for breathing and combustion, used in steelmaking.
26. (Kr): Present in high-intensity lamps and photography.
29. (Cr): Gives stainless steel its shine and anti-rust properties.
31. (He): Inert noble gas used in balloons and MRI machines.
33. (Ti): Lightweight, corrosion-resistant, used in medical implants and aircraft.
36. (H): Fuels star fusion, used in fuel cells, and a core component of water and organic compounds.
37. (Al): Used extensively in foil, cars, aircraft, cans.