The above shown image depicts Mendeleev's Periodic Table. The success of Mendeleev's prediction led chemists to not only accept his Periodic Table but also recognise him, as the originator of the concept on which it is based. Many incidents provided the convincing evidence for both the correctness and usefulness of Mendeleev's Periodic Table. Now, refer the above periodic table and answer.
1. Which element shows the properties similar to of Eka-Aluminium as predicted by Mendeleev?
a. scandium
b. gallium
c. germanium
d. All the options
2. What was the atomic mass of Eka-Aluminium as predicted by Mendeleev?
a. 68
b. 69.7
c. 71
d. 69.8
3. Was the Mendeleev's Periodic Table complete?
a. YES
b. NO
4. Which letter was used in the formula for oxides and hydrides at the top of the columns for the representation of elements in the groups, in Mendeleev's Periodic Table ?
a. P
b. Q
c. R
d. G
5. There were a few instances where Mendeleev had to place an element with a slightly greater atomic mass before an element with a slightly lower atomic mass. State true or false.
a. TRUE
b. FALSE