Question 4 - MCQs from (Past Year Papers & NCERT Exemplar) - Chapter 5 Class 10 - Periodic Classification of Elements

Last updated at April 16, 2024 by

What type of oxide would Eka– aluminium form?

(a) EO3

(b) E2 O2

(c) E2 O3

(d) EO

 

Answer

  • Eka-Aluminium was the name given to gallium , by Mendeleev, before it was discovered.
  • Galium is similar to aluminium since they belong to the same group.  
  • Aluminum forms oxide in the form of Al 2 O 3 , eka aluminium will also form oxide in the form of E 2 O 3

Lawis structure of Al203 - Teachoo.png

Therefore, the correct option is (c) E 2 O 3

Ask a doubt
Maninder Singh's photo - Co-founder, Teachoo

Made by

Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo