The basic difference between Mendeleev’s Periodic Law (A) and Modern Periodic Law (B) is:

The formula for the oxide formed by Eka-aluminum is:

1. ${\mathrm{EO}}_4$

2. ${\mathrm{E}}_2{\mathrm{O}}_3$

3. ${\mathrm{E}}_3{\mathrm{O}}_2$

4. EO

The basic theme of the periodic table is:

Those in a group that falls under the law of triads include:

1. Cl, Br, I

2. C, N, O

3. Na, K, Rb

4. H, O, N

Eka aluminium and Eka silicon are now known as:

An example of metalloid elements in the periodic table is:

 All the non-metals in the long form of the periodic table are placed under:

1. s-Block

2. p-Block

3. f-Block

4. d-Block

The element named after Lawrence Berkeley Laboratory is: 
1. Seaborgium
2. Lawrencium
3. Moscovium
4. Hafnium