Periodic Classification of Elements

Bihar Board Class 10 · Science · 18 past questions

3 of 18 · show all

1. Q9 2024

   The atomic number of sodium is

   Try it →
2. Q10 2024

   The atomic number of magnesium is 12. What is its valency ?

   Try it →
3. Q11 2024

   On moving from right to left across the period of the modern periodic table, the atomic size

   Try it →