Question

what is eka boron,eka aluminum and eka silicon
write all their oxides and chlorides and hydrides formula.

Answer 1

eka boron is scandium
eka aluminium is gallium
eka silicon is germanium

Answer 2

Answer:

Eka boron is Scandium

Eka aluminum is  Gallium.

Eka silicon is Germanium.

Explanation:

Mendeleev gave these names to the unnamed elements. Later they were named as scandium, galium and germanium.

Eka boron or Scandium:

It has the atomic number 21 in the periodic table. It develops a yellowish or pinkish coating when exposed to air. Scandium dissolves in acid.

Oxide of Scandium- $Sc_{2} O_{3}$

Chloride of Scandium- $ScCl_{3}$

Hydride of Scandium- $ScH_{3}$

Eka aluminium or gallium:

It has the atomic number 31 in the periodic table. It is blue-greyish crystalline element. It doesn't exist in the pure form. Some metals become brittle when Gallium is added to them.

Oxide of gallium- $Ga_{2} O_{3}$

Chloride of gallium-  $GaCl_{3}$

Hydride of gallium- $GaH_{3}$

Eka silicon or Germanium:

It is placed between silicon and tin in Group 14 of the periodic table. It is a grey-white, hard and lustrous element. It chemical and physical properties are similar to silicon.

Oxide of Germanium- $Ge_{2} O_{4}$

Chloride of Germanium- $GeCl_{4}$

Hydride of Germanium- $GeH_{4}$

#SPJ2