NEET 45-Day Challenge, Day 9: Check important topics of Chemistry Syllabus
With 37 days left for NEET UG 2025, students must focus on Chemistry. Understanding the syllabus, practicing reactions, and ...
Nature2d
Xenon out of its shell
In 1869, Mendeleev's first periodic table did not include them, as closed-shell elements remained undiscovered until Lord Rayleigh and William Ramsey isolated argon in 1894. Remarkably ...