WebThe Correct Formula of the Oxide of Eka-aluminium Element Predicted by Mendeleev Was: (A) Eao3 (B) Ea3o2 (C) Ea2o3 (D) Eao . CBSE English Medium Class 10. … WebScandium (Eka boron) Scandium (Sc) is an element with the atomic number 21 in the periodic table. Scandium is mined from one of the rare minerals from Scandinavia. The colour it develops when exposed to air is yellowish or pinkish cast. The characteristics of Scandium is it gets tarnished and burned easily if ignited.
Eka-aluminium would form oxide with formula: (1) \
WebAug 21, 2024 · Metals are protected from further oxidation by forming a hard scale of oxides when it is being oxidized. Not all metal oxides form a scale. In general, when the oxide formed is not very dense, it is not under stress, and the oxide layer forms a scale. Usually, a mole of metal oxide should occupy more volume than a mole of the metal itself. WebCorrect option is C) Eka- Aluminium (E) forms oxide with the same chemical formula as Aluminium oxide. Thus, the formula can be represented as E 2O 3. Hence, option C is correct. Solve any question of Classification Of Elements And Periodicity In Properties … christiania arkiv
What type of oxide would Eka-aluminum (Gallium) form?
WebApr 2, 2024 · Write the formulae of chlorides of Eka-silicon and Eka-aluminium, the elements predicted by Mendeleev. Answer : Eka-silicon is identified as germanium (Ge), which is placed in group 4 of Mendeleev’s periodic table. The valency of germanium is 4, so the chemical formula of its chloride must be GeCl4. Eka-aluminium was later identified … WebApr 2, 2024 · Complete Step By Step Answer: Eka-boron was the name given by Mendeleev to the undiscovered element which now exists by the name of scandium. Scandium is a rare earth metal of group 3 of the periodic table. Its atomic number is 21 with the symbol S c .It is a silvery white metallic d-block element. WebThe Correct Formula of the Oxide of Eka-aluminium Element Predicted by Mendeleev Was: (A) Eao3 (B) Ea3o2 (C) Ea2o3 (D) Eao . CBSE English Medium Class 10. Question Papers 939. Textbook Solutions 33590. MCQ Online Mock Tests 12. Important Solutions 4010. Question Bank Solutions 26519. george zimmerman florida shooting