Eka silicon is now called as:

Explanation

**Step-by-Step Solution:**

1. **Understanding the Term "Eka":** The term "Eka" was introduced by Dmitri Mendeleev in his periodic table. It is a prefix that indicates an element that is one place down in the periodic table from another element.

2. **Identifying the Element:** In this case, "Eka-silicon" refers to the element that is one position below silicon (Si) in Mendeleev's periodic table.

3. **Locating Silicon in the Periodic Table:** Silicon has the atomic number 14. The element directly below silicon in the same group (Group 14) is germanium (Ge), which has the atomic number 32.

4. **Conclusion:** Therefore, Eka-silicon is now known as germanium.

**Final Answer:** Eka-silicon is now called germanium.

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