Question

*Eka-aluminium and eka boron are now known as …………..*

1️⃣ Ga and Ge
2️⃣ Al and Si
3️⃣ Ga and Sc
4️⃣ H and Si​

Answer 1

Answer:

Al si ...................

Answer 2

3️⃣ Ga and Sc is the correct answer.

• Eka aluminium and eka boron were named so by Mendeleev. They were undiscovered at the time of creation of periodic table.
• So Mendeleev named the elements as per their proximity.
• Periodic table is the table arranging elements found in nature on the basis of their atomic number.
• It contains 18 groups and 7 periods.