Chemistry · Classification of Elements and Periodicity in Properties

Mendeleev's predicted formula for the oxide of Eka-silicon is \( \text{EO}_2 \). What is the formula of the chloride predicted for Eka-silicon?

1. A
   \( \text{E Cl}_3 \)
2. B
   \( \text{E Cl}_2 \)
3. C
   \( \text{E}_2\text{Cl}_3 \)
4. D
   \( \text{E Cl}_4 \)