Write similar elements to eka-boron , eka aluminum and eka - sillicon.

Eka-aluminium and Eka-silicon are

Eka aluminium is :

What were the names given to eka-boron, eka-aluminium and eka-sillicon respectively?

Eka-aluminium is

Eka-aluminium is

The three elements predicted by Mendeleev from the gaps in his periodic table were known as eka-boron, eka-aluminium and eka-silicon. What names were given to these elements when they were discovered later on?

Eka -aluminium and eka -silicon are known as

‘Eka' elements are

Mendeleev predicted the existence of certain elements not know at that time. He named two of these elements as eka-aluminium and eka-silicon. a. Name the elements which have taken the place of these elements. b. Mention the group and period of these elements in the modern periodic table. c. Which one of these two elements is a metalloid? d. How many valence electrons are present in eka-silicon? e. Eka-aluminium forms a chloride. What is its formula?