d and f BLOCK ELEMENTS

What blocks of the periodic table contain elements where d orbitals are progressively filled?

• s-block
• p-block
• d-block
• f-block

What general physical property did Mendeleev predict for Eka-silicon regarding its melting point?

• Low
• Moderate
• Variable
• High

According to Mendeleev's predictions in Table 3.3, what was the formula of the oxide for Eka-aluminium?

• EO
• E2O3
• EO2
• E2O5

What was the experimentally determined density of Germanium when it was discovered?

• 5.5 g/cm³
• 5.9 g/cm³
• 5.36 g/cm³
• 5.0 g/cm³

Which element did Mendeleev predict based on a gap under Aluminium?

• Gallium
• Germanium
• Eka-silicon
• Eka-aluminium