Which element can form tripositive ion ?

Related Mcqs:

1. Many properties of an element and its compounds can be predicted from the position of the element in the periodic table. What property could not be predicted in this way ?

   A. The nature of its oxides B. The charge on its ions C. The formula of its oxide D. Its number of isotopes...

2. Which of the following ion formation is always exothermic ?

   A. Uni-negative B. Uni-positive C. Di-negative D. Di-positive...

3. A solution has pH = 0 its H+ ion concentration is__________________?

   A. 1 x 10-1 B. 1 x 10-14 C. 1 x 10-7 D. 1...

4. When sparingly soluble salt is in equilibrium with molar concentration of its oppositely charged ion when the product is called_________________?

   A. common ion effect B. solubility product C. dissociation constant D. dissociation constant for an acid...

5. The compound or complex ion which has a ring in its structure__________________?

   A. polydentate ligand B. chelate C. monodentate ligand D. hydrate...

6. Which of the following ion is stable in aqueous solution ?

   A. H+ B. H- C. Cl- D. All are stable...

7. Addition of 2nd electron to a uni negative ion is always____________________?

   A. Exothermic B. Endothermic C. Data is insufficient D. Unpredictable...

8. Which ion will have maximum value of heat of hydration ?

   A. A1+3 B. Cs+ C. Ba+ D. Mg+2...

9. Nitronium ion is___________________?

   A. NO3 B. NO C. NO2- D. NO2+...

10. A scale which used to measure the Hydrogen Ion concentration in a solution is known as__________?

    A. Thermometer B. Viscometer C. PH Scale D. Stagmometer Submitted by: Ali Jan...