Class 10 | Modern Periodic Table | How to find Group and Period of an Element | Science | Chemistry - YouTube
Periodic table - Wikipedia
Neon Chemical 10 element of periodic table. Molecule And Communication Background. Chemical Ne, laboratory and science background. Essential chemical Stock Photo - Alamy
Periodic table - Wikipedia
Term 2 SQP] Choose an element from period 3 of modern periodic table
CBSE MCQs for Class 10 Science Chapter 5 Periodic Classification of Elements