Alkaline earth metals, Chemistry

Alkaline earth metals:

The elements Be, Mg, Ca, Sr, Ba and Ra belong to II A group.

2. II A group elements are also called alkaline earth metals.

3. The valence electronic configuration of group II A elements is ns (n = 2,3, .......)2

4. Mg and Ca are abundant in nature in the form of their oxides and halides.

5. Radium is a Radioactive element.

6. Atomic size of group II A elements increases from Be to Ra.

7. Ionization energies and electronegativity of Group II A elements decrease from Be to Ra.

8. Group II A elements are very reactive and hence do not occur in elemental state.

9. These elements react with

(i) Water to liberate hydrogen

(ii) Oxygen to form oxides and

(iii) Halogens to form halides.

10. Oxides of these elements are basic in nature.

11. All group IIA elements form hydrides of type MH , which act as reducing reagents.

12. BeCl2 is covalent. Other halides are ionic.

13. Group IIA elements are extracted from their chlorides by electrolytic reduction.

14. KCl and NaCl are added to anhydrous MgCl2 during the Mg extraction to lower the melting point  and also increase the electrical conductivity.

15. Graphite rod and iron pot act as anode and cathode respectively during the electrolysis of MgCl2.

Posted Date: 10/15/2012 9:32:21 AM | Location : United States







Related Discussions:- Alkaline earth metals, Assignment Help, Ask Question on Alkaline earth metals, Get Answer, Expert's Help, Alkaline earth metals Discussions

Write discussion on Alkaline earth metals
Your posts are moderated
Related Questions
Thermoplastic: These polymer gets soften on heating and can be converted into any shape that they can retain on cooling. Such polymers that soften on heating and stiffen on coolin

The specific charge of proton is  9.6 X 10 6 CKG -1   then for an α-particle it will be : (1) 38.4X 10 7 Ckg -1           (2)  19.2x 10 7 Ckg -1         (3) 2.4 x 10

Q. What is the Structure of diborane? The structure of diborane is of great interest since it cannot be explained on the basis of simple theories of bonding. As mentioned earli


whats is surfactant and its applications in cloud point extraction ?

what is alternative form of cholesterol formed in plants and prokaryotes ?

The heat of combustion for ethane, C 2 H 6 , is 52.0 kJ/g. How much heat could be released if 1 mol of ethane undergoes full combustion? Answer:

Q. What do you mean by Emulsions? Emulsions, as you may already know by now, are colloidal dispersions of a liquid in another liquid with which it is immiscible. Emulsions can

Cationic detergent - Types of Detergent These types of detergent are mainly acetates or chlorides of quaternary amines. Being much more restricted than the anionic detergents t

?H value obtained for the reaction NH3 + HCl –› NH4Cl using the thermodynamic data in your lab procedure?